@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}
}
@article{Ferrein2004,
  author    = {Ferrein, Alexander},
  title     = {Autonome Entscheidungsfindung bei Robotern : Planwirtschaft},
  series = {Linux-Magazin},
  journal   = {Linux-Magazin},
  number    = {7},
  issn      = {1432-640X (Print)},
  pages     = {50 -- 53},
  year      = {2004},
  language  = {de}
}
@article{WolfBiesenGreeb2014,
  author    = {Wolf, Martin and Biesen, Ina van der and Greeb, Birgit},
  title     = {Mein Freund, die Uni},
  series = {Die neue Hochschule : DNH : f{\"u}r anwendungsbezogene Wissenschaft und Kunst},
  volume    = {2014},
  journal   = {Die neue Hochschule : DNH : f{\"u}r anwendungsbezogene Wissenschaft und Kunst},
  number    = {2},
  publisher = {HLB},
  address   = {Bonn},
  issn      = {0340-448X},
  pages     = {54 -- 56},
  year      = {2014},
  language  = {de}
}
@article{FuchsRitz2011,
  author    = {Fuchs, Britta and Ritz, Thomas},
  title     = {Absatzkan{\"a}le kaum verkn{\"u}pft},
  series = {IT-Mittelstand : IT-Business im Mittelstand},
  volume    = {2011},
  journal   = {IT-Mittelstand : IT-Business im Mittelstand},
  number    = {9},
  publisher = {Medienhaus-Verlag},
  address   = {Bergisch-Gladbach},
  pages     = {16},
  year      = {2011},
  language  = {de}
}
@article{Alt1974,
  author    = {Alt, Helmut},
  title     = {1,45 Mrd. DM f{\"u}r die Kohlevergasung},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {24},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {5},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {243 -- 244},
  year      = {1974},
  language  = {de}
}
@article{Alt1992,
  author    = {Alt, Helmut},
  title     = {Renditevergleich zwischen Immobilien und Festverzinslichen},
  series = {Die Bank},
  journal   = {Die Bank},
  number    = {H. 2},
  issn      = {0342-3182},
  pages     = {91 -- 92},
  year      = {1992},
  language  = {de}
}
@article{Alt1975,
  author    = {Alt, Helmut},
  title     = {Elektro-Brikett-Zentralspeicherheizung soll die Spitzenlast der EVU schonen},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {25},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {4},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {148 -- 149},
  year      = {1975},
  language  = {de}
}
@article{Alt1974,
  author    = {Alt, Helmut},
  title     = {Ab 1975 Uranerz aus Rabbit-Lake},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {24},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {1/2},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {34},
  year      = {1974},
  language  = {de}
}