@article{KernKrichel2004,
  author    = {Kern, Alexander and Krichel, Frank},
  title     = {Considerations about the lightning protection system of mains independent renewable energy hybrid-systems - practical experiences},
  series = {Journal of electrostatics. 60 (2004), H. 2-4},
  journal   = {Journal of electrostatics. 60 (2004), H. 2-4},
  isbn      = {0304-3886},
  pages     = {257 -- 263},
  year      = {2004},
  language  = {en}
}
@book{Kern2004,
  author    = {Kern, Alexander},
  title     = {Blitz- und {\"U}berspannungsschutz f{\"u}r Anlagen der regenerativen Energietechnik},
  publisher = {Fachhochschule Aachen, Abt. J{\"u}lich},
  address   = {Aachen},
  year      = {2004},
  language  = {de}
}
@article{ZischankHeidlerWiesingeretal.2004,
  author    = {Zischank, Wolfgang J. and Heidler, Fridolin and Wiesinger, J. and Metwally, I. and Kern, Alexander and Seevers, M.},
  title     = {Laboratory simulation of direct lightning strokes to a modeled building : measurement of magnetic fields and included voltages},
  series = {Journal of electrostatics. 60 (2004), H. 2 - 4},
  journal   = {Journal of electrostatics. 60 (2004), H. 2 - 4},
  isbn      = {0304-3886},
  pages     = {223 -- 232},
  year      = {2004},
  language  = {en}
}
@article{DielmannMehlkopfCudina2004,
  author    = {Dielmann, Klaus-Peter and Mehlkopf, Marcus and Cudina, Boris},
  title     = {Erfahrungen mit der Software Risa-Gen},
  series = {BWK : das Energie-Fachmagazin},
  volume    = {56},
  journal   = {BWK : das Energie-Fachmagazin},
  number    = {3},
  isbn      = {0006-9612},
  issn      = {1618-193X},
  pages     = {24 -- 25},
  year      = {2004},
  language  = {de}
}
@article{Hagemann2004,
  author    = {Hagemann, Hans-J{\"u}rgen},
  title     = {INGMEDIA - E-Learning f{\"u}r Laborpraktika},
  series = {Evaluation von E-Learning : Zielrichtungen, methodologische Aspekte, Zukunftsperspektiven / Dorothee M. Meister ... (Hrsg.)},
  journal   = {Evaluation von E-Learning : Zielrichtungen, methodologische Aspekte, Zukunftsperspektiven / Dorothee M. Meister ... (Hrsg.)},
  publisher = {Waxmann},
  address   = {M{\"u}nster [u.a.]},
  isbn      = {3-8309-1311-7},
  pages     = {217 -- 222},
  year      = {2004},
  language  = {de}
}
@article{HagemannBreitschuhGraberetal.2004,
  author    = {Hagemann, Hans-J{\"u}rgen and Breitschuh, S. and Graber, S. and Schmitz, G{\"u}nter},
  title     = {Internet Laboratory Courses with Remote Access and Control of Real Measurements on Sensors and Electronic Components},
  series = {Mechatronics \& Robotics 2004 : Aachen, Germany, September 13 - 15, 2004 / [APS - European Centre for Mechatronics]. P. Drews (ed.)},
  journal   = {Mechatronics \& Robotics 2004 : Aachen, Germany, September 13 - 15, 2004 / [APS - European Centre for Mechatronics]. P. Drews (ed.)},
  publisher = {Eysoldt},
  address   = {Aachen},
  isbn      = {3-938153-30-X},
  pages     = {1280 -- 1284},
  year      = {2004},
  language  = {en}
}
@article{GrundmannBommes2004,
  author    = {Grundmann, Reinhard and Bommes, Leonhard},
  title     = {Analyse von Kennfeldern drallgesteuerter Radialventilatoren},
  series = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 55 (2004), H. 8},
  journal   = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 55 (2004), H. 8},
  isbn      = {0017-9906},
  pages     = {54 -- 62},
  year      = {2004},
  language  = {de}
}
@article{Grundmann2004,
  author    = {Grundmann, Reinhard},
  title     = {Raumlufttechnik, L{\"u}ftungstechnik, Klimatechnik, L{\"a}rm},
  series = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 55 (2004), H. 12},
  journal   = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 55 (2004), H. 12},
  isbn      = {0017-9906},
  pages     = {46 -- 49},
  year      = {2004},
  language  = {de}
}
@book{SammHemme2004,
  author    = {Samm, Doris and Hemme, Heinrich},
  title     = {Physikalische Denksportaufgaben},
  publisher = {Klett},
  address   = {Stuttgart},
  isbn      = {3-12-772531-0},
  year      = {2004},
  language  = {de}
}
@book{Knepper2004,
  author    = {Knepper, Ludger},
  title     = {Aufbau eines Benchmark-Systems f{\"u}r operative Unternehmensprozesse},
  address   = {FH Aachen},
  year      = {2004},
  language  = {de}
}