@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}
}