@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Zinsberechnung nach dem Sparbuch-Modell},
  series = {Frankfurter Zeitung : Blick durch die Wirtschaft : Zeitung f{\"u}r Finanzen, Steuern, Recht und Management},
  journal   = {Frankfurter Zeitung : Blick durch die Wirtschaft : Zeitung f{\"u}r Finanzen, Steuern, Recht und Management},
  pages     = {vom 22.3.1989},
  year      = {1989},
  language  = {de}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Die Bedeutung des Effektivzinses in der Finanzwirtschaft},
  series = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater},
  journal   = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater},
  issn      = {0340-7926},
  pages     = {31 -- 32},
  year      = {1989},
  language  = {de}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Einfluß der Kontof{\"u}hrungsmodelle auf den Effektivzins und die Restschuld bei Annuit{\"a}tendarlehen},
  series = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater},
  journal   = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater},
  issn      = {0340-7926},
  pages     = {32 -- 37},
  year      = {1989},
  language  = {de}
}
@article{Alt2002,
  author    = {Alt, Helmut},
  title     = {Belieferung von Kunden in fremden Netzgebieten},
  series = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  volume    = {Bd. 101},
  journal   = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  number    = {H. 1/2},
  issn      = {0013-5496},
  pages     = {26 -- 35},
  year      = {2002},
  language  = {de}
}
@article{Alt2005,
  author    = {Alt, Helmut},
  title     = {Wunschphantasie eines eingefleischten Kernenergiegegners : zur Rede von Bundesumweltminister J{\"u}rgen Trittin auf dem VDEW-Kongress 2005 "Die Energieversorgung der Zukunft"},
  series = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  volume    = {Bd. 104},
  journal   = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  number    = {H. 17/18},
  issn      = {0013-5496},
  pages     = {7},
  year      = {2005},
  language  = {de}
}
@article{Alt2005,
  author    = {Alt, Helmut},
  title     = {Versorgungssicherheit und Windenergie : Tatsachen und Fakten statt Mythen und Mysterien},
  series = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  volume    = {Bd. 104},
  journal   = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  number    = {H. 25},
  issn      = {0013-5496},
  pages     = {42 -- 45},
  year      = {2005},
  language  = {de}
}
@article{Alt2011,
  author    = {Alt, Helmut},
  title     = {Die Sonne bestimmt zunehmend die Spannung in der Steckdose : Lastflussberechnung einer Photovoltaikeinspeisung},
  series = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  volume    = {Bd. 110},
  journal   = {EW : das Magazin f{\"u}r die Energie-Wirtschaft},
  number    = {H. 17/18},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt, M.},
  issn      = {0013-5496},
  pages     = {24 -- 29},
  year      = {2011},
  language  = {de}
}
@article{Alt1970,
  author    = {Alt, Helmut},
  title     = {Entwicklungstendenzen der Sicherheit und der notwendigen Reserveleistung beim Verbundbetrieb der Kraftwerke},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {69},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {25},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {672 -- 678},
  year      = {1970},
  language  = {de}
}
@incollection{Alt1971,
  author    = {Alt, Helmut},
  title     = {Fußball oder Mathematik},
  series = {Alma Mater Aquensis : Jahresbericht},
  booktitle = {Alma Mater Aquensis : Jahresbericht},
  pages     = {110 -- 114},
  year      = {1971},
  language  = {de}
}
@article{Alt1972,
  author    = {Alt, Helmut},
  title     = {Digitale Berechnung der Betriebsdiagramme von Hochspannungsleitungen},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {71},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {4},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {87 -- 92},
  year      = {1972},
  language  = {de}
}
@article{Alt1974,
  author    = {Alt, Helmut},
  title     = {Auswertung von Pr{\"u}fungsergebnissen auf elektronischen Rechenanlagen},
  series = {Angewandte Informatik},
  volume    = {16},
  journal   = {Angewandte Informatik},
  number    = {5},
  publisher = {Vieweg},
  address   = {Braunschweig},
  issn      = {0013-5704},
  pages     = {219 -- 222},
  year      = {1974},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Tabellenfreie Berechnung der Einkommensteuer mit Hilfe des programmierbaren Taschenrechners},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {77},
  journal   = {Elektrizit{\"a}tswirtschaft},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {486 -- 489},
  year      = {1978},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Wirtschaftlichkeit von Investitionen},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {77},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {3},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {73 -- 76},
  year      = {1978},
  language  = {de}
}
@article{Alt1979,
  author    = {Alt, Helmut},
  title     = {Isolierte Freileitungen, ein Betriebsmittel f{\"u}r schwierige Trassenf{\"u}hrung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 78},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 10},
  issn      = {0013-5496},
  pages     = {250 -- 256},
  year      = {1979},
  language  = {de}
}
@article{Alt1980,
  author    = {Alt, Helmut},
  title     = {Kurzschlußstromberechnung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 79},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 10},
  issn      = {0013-5496},
  pages     = {379 -- 382},
  year      = {1980},
  language  = {de}
}
@article{Alt1981,
  author    = {Alt, Helmut},
  title     = {Wirtschaftlichkeitsberechnung von Investitionen mit dem programmierbaren Taschenrechner},
  series = {3 R international : RRR ; Rohre, Rohrleitungsbau, Rohrleitungstransport},
  volume    = {Jg. 20},
  journal   = {3 R international : RRR ; Rohre, Rohrleitungsbau, Rohrleitungstransport},
  number    = {H. 10},
  issn      = {0340-3386},
  pages     = {561 -- 565},
  year      = {1981},
  language  = {de}
}
@article{Alt1982,
  author    = {Alt, Helmut},
  title     = {Statische oder dynamische Wirtschaftlichkeitsberechnung bei Investitionen zur Energieeinsparung},
  series = {Elektrow{\"a}rme international Edition B: Industrielle Elektrow{\"a}rme : IEW = Industrial applications of electro-heat : EWI ; Zeitschrift f{\"u}r das gesamte Gebiet der Elektrow{\"a}rme in Industrie, Gewerbe und Haushalt},
  volume    = {Jg. 40},
  journal   = {Elektrow{\"a}rme international Edition B: Industrielle Elektrow{\"a}rme : IEW = Industrial applications of electro-heat : EWI ; Zeitschrift f{\"u}r das gesamte Gebiet der Elektrow{\"a}rme in Industrie, Gewerbe und Haushalt},
  number    = {H. 3/4},
  issn      = {0340-3521},
  pages     = {166 -- 172},
  year      = {1982},
  language  = {de}
}
@article{Alt1983,
  author    = {Alt, Helmut},
  title     = {Einsatz programmierbarer Rechner im Sondervertragskundenbereich der Gasversorgung},
  series = {Das Gas- und Wasserfach : Ausgabe Gas, Erdgas : GWF},
  volume    = {Bd. 124},
  journal   = {Das Gas- und Wasserfach : Ausgabe Gas, Erdgas : GWF},
  number    = {H. 9},
  issn      = {0016-4909},
  pages     = {468 -- 471},
  year      = {1983},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Intervallschalter mit getrennt einstellbarer Pulszeit und Pulszahl},
  series = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler},
  volume    = {27},
  journal   = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler},
  number    = {H. 14},
  publisher = {WEKA Fachmedien},
  address   = {Haar},
  issn      = {0013-5658},
  pages     = {76},
  year      = {1978},
  language  = {de}
}
@incollection{Alt1983,
  author    = {Alt, Helmut},
  title     = {Analog anzeigende Digitaluhr},
  series = {FH-Texte ; 36 : Berichte aus dem Fachbereich Elektrotechnik Aachen},
  booktitle = {FH-Texte ; 36 : Berichte aus dem Fachbereich Elektrotechnik Aachen},
  publisher = {Fachhochschule Aachen},
  address   = {Aachen},
  pages     = {98 -- 104},
  year      = {1983},
  language  = {de}
}
@article{Alt1983,
  author    = {Alt, Helmut},
  title     = {Auswertung von Belastungskennlinien},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 82},
  journal   = {Elektrizit{\"a}tswirtschaft},
  issn      = {0013-5496},
  pages     = {208 -- 210},
  year      = {1983},
  language  = {de}
}
@article{Alt1985,
  author    = {Alt, Helmut},
  title     = {Vorteilsausgleich durch Versorgungsunternehmen f{\"u}r Ersatzleistungen Dritter},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 104},
  journal   = {Elektrizit{\"a}tswirtschaft},
  issn      = {0013-5496},
  pages     = {440 -- 443},
  year      = {1985},
  language  = {de}
}
@article{Alt1985,
  author    = {Alt, Helmut},
  title     = {Multiplikativ oder additiv? Diskussionsbeitrag zu Preisanpassungsklauseln in der Gaswirtschaft},
  series = {Energiewirtschaftliche Tagesfragen : et ; Zeitschrift f{\"u}r Energiewirtschaft, Recht, Technik und Umwelt},
  volume    = {Jg. 35},
  journal   = {Energiewirtschaftliche Tagesfragen : et ; Zeitschrift f{\"u}r Energiewirtschaft, Recht, Technik und Umwelt},
  issn      = {0013-743X},
  pages     = {609 -- 611},
  year      = {1985},
  language  = {de}
}
@article{Alt1986,
  author    = {Alt, Helmut},
  title     = {Steuersenkungsgesetz-Auswirkungen und Berechnung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 85},
  journal   = {Elektrizit{\"a}tswirtschaft},
  issn      = {0013-5496},
  pages     = {238 -- 242},
  year      = {1986},
  language  = {de}
}
@article{Alt1986,
  author    = {Alt, Helmut},
  title     = {Dialoggesteuerte harmonische Analyse mit dem HP 41},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 85},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 4},
  issn      = {0013-5496},
  pages     = {139 -- 142},
  year      = {1986},
  language  = {de}
}
@article{Alt1986,
  author    = {Alt, Helmut},
  title     = {Dialoggesteuerte harmonische Analyse mit dem HP 41},
  series = {Elektrow{\"a}rme international Edition B : Industrielle Elektrow{\"a}rme : IEW = Industrial applications of electro-heat : EWI ; Zeitschr. f{\"u}r das gesamte Gebiet der Elektrow{\"a}rme in Industrie, Gewerbe und Haushalt},
  volume    = {Jg. 44},
  journal   = {Elektrow{\"a}rme international Edition B : Industrielle Elektrow{\"a}rme : IEW = Industrial applications of electro-heat : EWI ; Zeitschr. f{\"u}r das gesamte Gebiet der Elektrow{\"a}rme in Industrie, Gewerbe und Haushalt},
  number    = {H. 6},
  issn      = {0340-3521},
  pages     = {283 -- 287},
  year      = {1986},
  language  = {de}
}
@article{Alt1986,
  author    = {Alt, Helmut},
  title     = {Dialoggesteuerte Spannungs- und Belastungsberechnung im Netz eines Elektrizit{\"a}tsversorgungsunternehmens},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 85},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 23},
  issn      = {0013-5496},
  pages     = {906 -- 910},
  year      = {1986},
  language  = {de}
}
@article{Alt1987,
  author    = {Alt, Helmut},
  title     = {Effektivzinsberechnung bei industriellen oder gewerblichen Tilgungsdarlehen},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 86},
  journal   = {Elektrizit{\"a}tswirtschaft},
  issn      = {0013-5496},
  pages     = {592 -- 595},
  year      = {1987},
  language  = {de}
}
@article{Alt1988,
  author    = {Alt, Helmut},
  title     = {Die wichtigsten Kontof{\"u}hrungsmodelle},
  series = {Frankfurter Zeitung : Blick durch die Wirtschaft : Zeitung f{\"u}r Finanzen, Steuern, Recht und Management},
  journal   = {Frankfurter Zeitung : Blick durch die Wirtschaft : Zeitung f{\"u}r Finanzen, Steuern, Recht und Management},
  number    = {Nr. 240 vom 13.12.1988},
  pages     = {3},
  year      = {1988},
  language  = {de}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Steuerreformgesetz 1990},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 88},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 1/2},
  issn      = {0013-5496},
  pages     = {78 -- 83},
  year      = {1989},
  language  = {de}
}
@article{Alt1987,
  author    = {Alt, Helmut},
  title     = {Steuersenkungs-Erweiterungsgesetz 1988 zur Gesamtentlastung der Einkommensteuer},
  series = {Betriebs-Berater : BB ; Zeitschrift f{\"u}r Recht und Wirtschaft},
  volume    = {Vol. 42},
  journal   = {Betriebs-Berater : BB ; Zeitschrift f{\"u}r Recht und Wirtschaft},
  number    = {H. 32},
  issn      = {0340-7918},
  pages     = {2207 -- 2208},
  year      = {1987},
  language  = {de}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Steuerreformgesetz 1990},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 88},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 2},
  issn      = {0947-0581 (E-Journal); 0340-7918 (Print)},
  pages     = {120 -- 121},
  year      = {1989},
  language  = {de}
}
@article{Alt1990,
  author    = {Alt, Helmut},
  title     = {Energietarifstruktur in Ostdeutschland},
  series = {Energiewirtschaftliche Tagesfragen : et ; Zeitschrift f{\"u}r Energiewirtschaft, Recht, Technik und Umwelt},
  volume    = {Bd. 40},
  journal   = {Energiewirtschaftliche Tagesfragen : et ; Zeitschrift f{\"u}r Energiewirtschaft, Recht, Technik und Umwelt},
  number    = {H. 11},
  issn      = {0013-743X},
  pages     = {782 -- 788},
  year      = {1990},
  language  = {de}
}
@article{Alt1991,
  author    = {Alt, Helmut},
  title     = {Effektivzins und APR},
  series = {Die Bank : Zeitschrift f{\"u}r Bankpolitik und Bankpraxis},
  volume    = {Jg. 31},
  journal   = {Die Bank : Zeitschrift f{\"u}r Bankpolitik und Bankpraxis},
  number    = {H. 4},
  issn      = {0342-3182},
  pages     = {230 -- 231},
  year      = {1991},
  language  = {de}
}
@article{Alt1992,
  author    = {Alt, Helmut},
  title     = {M{\"o}glichkeiten der CO2-Minderung "alternativ" betrachtet},
  series = {Etz : Elektrotechnik \& Automation},
  volume    = {Bd. 113},
  journal   = {Etz : Elektrotechnik \& Automation},
  number    = {H. 6-7},
  issn      = {0170-1711},
  pages     = {400},
  year      = {1992},
  language  = {de}
}
@article{Alt1995,
  author    = {Alt, Helmut},
  title     = {Netzimpedanz- und Oberschwingungsberechnung in Netzen der {\"o}ffentlichen Stromversorgung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 94},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 4},
  issn      = {0013-5496},
  pages     = {166 -- 174},
  year      = {1995},
  language  = {de}
}
@inproceedings{HartungHillgaertnerSchmitzetal.2014,
  author    = {Hartung, Frank and Hillg{\"a}rtner, Michael and Schmitz, G{\"u}nter and Schuba, Marko and Adolphs, Fabian and Hoffend, Jens and Theis, Jochen},
  title     = {IT-Sicherheit im Automobil},
  series = {AmE 2014 : Automotive meets Electronics, Beitr{\"a}ge der 5. GMM-Fachtagung vom 18. bis 19. Februar 2014 in Dortmund. (GMM-Fachbericht ; 78)},
  booktitle = {AmE 2014 : Automotive meets Electronics, Beitr{\"a}ge der 5. GMM-Fachtagung vom 18. bis 19. Februar 2014 in Dortmund. (GMM-Fachbericht ; 78)},
  publisher = {VDE-Verl.},
  address   = {Berlin},
  organization    = {VDE/VDI-Gesellschaft Mikroelektronik, Mikrosystem- und Feinwerktechnik (GMM)},
  isbn      = {978-3-8007-3580-8},
  pages     = {CD-ROM},
  year      = {2014},
  language  = {de}
}
@book{Huening2014,
  author    = {H{\"u}ning, Felix},
  title     = {The fundamentals of electrical engineering for mechatronics},
  publisher = {de Gruyter},
  address   = {Berlin},
  isbn      = {978-3-11-034991-7 (Druckausg.)},
  pages     = {IX, 208 S.},
  year      = {2014},
  language  = {en}
}
@inproceedings{BonneyHoefkenPaffenetal.2015,
  author    = {Bonney, Gregor and H{\"o}fken, Hans-Wilhelm and Paffen, Benedikt and Schuba, Marko},
  title     = {ICS/SCADA Security - Analysis of a Beckhoff CX5020 PLC},
  series = {1st International Conference on Information Systems Security and Privacy : ICISSP 2015},
  booktitle = {1st International Conference on Information Systems Security and Privacy : ICISSP 2015},
  organization    = {International Conference on Information Systems Security and Privacy <1, 2015, Angers>},
  pages     = {1 -- 6},
  year      = {2015},
  language  = {en}
}
@inproceedings{LindenlaufHoefkenSchuba2015,
  author    = {Lindenlauf, Simon and H{\"o}fken, Hans-Wilhelm and Schuba, Marko},
  title     = {Cold Boot Attacks on DDR2 and DDR3 SDRAM},
  series = {10th International Conference on Availability, Reliability and Security (ARES) 2015},
  booktitle = {10th International Conference on Availability, Reliability and Security (ARES) 2015},
  doi       = {10.1109/ARES.2015.28},
  pages     = {287 -- 292},
  year      = {2015},
  language  = {en}
}
@book{GromovHuening2015,
  author    = {Gromov, Viacheslav and H{\"u}ning, Felix},
  title     = {Schnelleinstieg mit dem Renesas RL78/G14 Starter Kit},
  publisher = {Franzis},
  address   = {Poing},
  isbn      = {978-3-645-10157-8},
  pages     = {76 Seiten},
  year      = {2015},
  language  = {de}
}
@incollection{GoeckelSchifferWagneretal.2015,
  author    = {Goeckel, Tom and Schiffer, Stefan and Wagner, Hermann and Lakemeyer, Gerhard},
  title     = {The Video Conference Tool Robot ViCToR},
  series = {Intelligent Robotics and Applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II},
  booktitle = {Intelligent Robotics and Applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II},
  publisher = {Springer},
  isbn      = {978-3-319-22876-1},
  doi       = {10.1007/978-3-319-22876-1_6},
  pages     = {61 -- 73},
  year      = {2015},
  abstract  = {We present a robotic tool that autonomously follows a conversation to enable remote presence in video conferencing. When humans participate in a meeting with the help of video conferencing tools, it is crucial that they are able to follow the conversation both with acoustic and visual input. To this end, we design and implement a video conferencing tool robot that uses binaural sound source localization as its main source to autonomously orient towards the currently talking speaker. To increase robustness of the acoustic cue against noise we supplement the sound localization with a source detection stage. Also, we include a simple onset detector to retain fast response times. Since we only use two microphones, we are confronted with ambiguities on whether a source is in front or behind the device. We resolve these ambiguities with the help of face detection and additional moves. We tailor the system to our target scenarios in experiments with a four minute scripted conversation. In these experiments we evaluate the influence of different system settings on the responsiveness and accuracy of the device.},
  language  = {en}
}
@book{GalleyMinoggioSchubaetal.2016,
  author    = {Galley, Birgit and Minoggio, Ingo and Schuba, Marko and Bischoff, Barbara and H{\"o}fken, Hans-Wilhelm},
  title     = {Unternehmenseigene Ermittlungen : Recht - Kriminalistik - IT},
  publisher = {Erich Schmidt Verlag},
  address   = {Berlin},
  isbn      = {978-3-503-16531-5},
  pages     = {XIII, 372 S.},
  year      = {2016},
  language  = {de}
}
@inproceedings{BraunHoefkenSchubaetal.2015,
  author    = {Braun, Sebastian and H{\"o}fken, Hans-Wilhelm and Schuba, Marko and Breuer, Michael},
  title     = {Forensische Sicherung von DSLRoutern},
  series = {Proceedings of D-A-CH Security 2015. St. Augustin 8. und 9. September 2015},
  booktitle = {Proceedings of D-A-CH Security 2015. St. Augustin 8. und 9. September 2015},
  pages     = {11 S.},
  year      = {2015},
  language  = {de}
}
@book{Alt1979,
  author    = {Alt, Helmut},
  title     = {Angewandte Mathematik, Finanzmathematik, Statistik, Informatik f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 1)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04150-1},
  pages     = {VIII, 162 S : graph. Darst.},
  year      = {1979},
  language  = {de}
}
@book{Alt1980,
  author    = {Alt, Helmut},
  title     = {Allgemeine Elektrotechnik, Nachrichtentechnik, Impulstechnik f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 2)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04151-X},
  pages     = {VII, 109 S. : graph. Darst.},
  year      = {1980},
  language  = {de}
}
@book{Alt1980,
  author    = {Alt, Helmut},
  title     = {Elektrische Energietechnik, Steuerungstechnik, Elektrizit{\"a}tswirtschaft f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 6)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04180-3},
  pages     = {VIII, 118 S. : graph. Darst.},
  year      = {1980},
  language  = {de}
}
@book{Alt1986,
  author    = {Alt, Helmut},
  title     = {Finanzmathematik : Algorithmen und praktische Anwendungen; mit Beispielprogrammen zum HP-41},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04448-9},
  pages     = {XI, 439 S. : graph. Darst.},
  year      = {1986},
  language  = {de}
}
@misc{Alt2011,
  author    = {Alt, Helmut},
  title     = {Energiekonzept als Br{\"u}cke in die Zukunft : Beitrag f{\"u}r KTG Kongress: vom 17. bis 19. Mai 2011, Berlin, Section 10: Energy Industry and Economics},
  pages     = {1 -- 9},
  year      = {2011},
  language  = {de}
}
@misc{Alt2014,
  author    = {Alt, Helmut},
  title     = {Energiekonzept mit kurzer Br{\"u}cke zu witterungsabh{\"a}ngigen, hohen Strompreisen : KTG Jahrestagung in Stuttgart, 22.- 24. 5. 2012},
  pages     = {1 -- 60},
  year      = {2014},
  language  = {de}
}