@phdthesis{Herrmann2004,
  author    = {Herrmann, Ulf},
  title     = {Untersuchungen zur Rohrwandbenetzung bei der Dampferzeugung in horizontalen und geneigten Parabolrinnen-Solarkollektoren. - (FLAGSOL Forschungsbericht)},
  publisher = {FLAGSOL},
  address   = {K{\"o}ln},
  isbn      = {3-9804901-2-2},
  pages     = {IX, 145 S. : Ill., graph. Darst.},
  year      = {2004},
  language  = {de}
}
@inproceedings{HerrmannGraeterNava2004,
  author    = {Herrmann, Ulf and Graeter, F. and Nava, P.},
  title     = {Performance of the SKAL-ET Collector Loop at KJC Operating Company},
  series = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12},
  booktitle = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12},
  editor    = {Ramos, C.},
  publisher = {Instituto de Investigaciones Electricas},
  address   = {[s.l.]},
  isbn      = {968-6114-18-1},
  year      = {2004},
  language  = {en}
}
@article{Heuermann2004,
  author    = {Heuermann, Holger},
  title     = {A Synthesis Technique for Mono- and Mixed-Mode Symmetrical Filter},
  series = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association . Vol. 1},
  journal   = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association . Vol. 1},
  publisher = {Horizon House Publ},
  address   = {London},
  isbn      = {1-580-53992-0},
  pages     = {309 -- 312},
  year      = {2004},
  language  = {en}
}
@article{HeuermannErkens2004,
  author    = {Heuermann, Holger and Erkens, Holger},
  title     = {Blocking structures for mixed-mode systems. / Erkens, Holger ; Heuermann, Holger},
  series = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association. Vol. 1},
  journal   = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association. Vol. 1},
  publisher = {Horizon House Publ.},
  address   = {London},
  isbn      = {1-580-53992-0},
  pages     = {297 -- 300},
  year      = {2004},
  language  = {en}
}
@article{HeuermannRumiantsevSchott2004,
  author    = {Heuermann, Holger and Rumiantsev, A. and Schott, S.},
  title     = {Advanced on-wafer multiport calibration methods for mono- and mixed-mode device characterization},
  series = {On wafer characterization : 63rd ARFTG conference digest, spring 2004, 11 June 2004, Fort Worth, TX / Automatic RF Techniques Group. [Conference chair: John Cable. Publication chair: J. G. Burns]},
  journal   = {On wafer characterization : 63rd ARFTG conference digest, spring 2004, 11 June 2004, Fort Worth, TX / Automatic RF Techniques Group. [Conference chair: John Cable. Publication chair: J. G. Burns]},
  publisher = {IEEE Operations Center},
  address   = {Piscataway, NJ},
  isbn      = {0-7803-8371-0},
  pages     = {91 -- 96},
  year      = {2004},
  language  = {en}
}
@article{HeuermannSadeghfam2004,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {Novel balanced inductor for compact differential systems / Sadeghfam, Arash; Heuermann, Holger},
  series = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association},
  journal   = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association},
  publisher = {Horizon House Publ.},
  address   = {London},
  isbn      = {1-580-53992-0},
  pages     = {709 -- 712},
  year      = {2004},
  language  = {en}
}
@article{HillenFischer2004,
  author    = {Hillen, Walter and Fischer, Felix},
  title     = {Farbanalyse von gebackenen oder frittierten Nahrungsmitteln und Vorhersage des Acrylamid-Wertes},
  series = {10. Workshop Farbbildverarbeitung : Elektronische Ressource : 7.-8. Oktober 2004, Koblenz = 10th Workshop Color Image Processing / Detlev Droege ... Hrsg.},
  journal   = {10. Workshop Farbbildverarbeitung : Elektronische Ressource : 7.-8. Oktober 2004, Koblenz = 10th Workshop Color Image Processing / Detlev Droege ... Hrsg.},
  publisher = {Der Andere Verl.},
  address   = {T{\"o}nning [u.a.]},
  isbn      = {389959245X},
  pages     = {133 -- 148},
  year      = {2004},
  language  = {de}
}
@article{HillgaertnerPeier2004,
  author    = {Hillg{\"a}rtner, Michael and Peier, Dirk},
  title     = {Einflussgr{\"o}ssen bei der G{\"u}tebestimmung von Modenverwirbelungskammern},
  series = {Elektromagnetische Vertr{\"a}glichkeit : EMV 2004, 12. Internationale Fachmesse und Kongress f{\"u}r Elektromagnetische Vertr{\"a}glichkeit, 10. - 12. Februar 2004, Messe D{\"u}sseldorf ; [mit CD-ROM] / Veranst.: MESAGO-Messe-Frankfurt GmbH, Stuttgart. Hrsg.: Kurt Feser},
  journal   = {Elektromagnetische Vertr{\"a}glichkeit : EMV 2004, 12. Internationale Fachmesse und Kongress f{\"u}r Elektromagnetische Vertr{\"a}glichkeit, 10. - 12. Februar 2004, Messe D{\"u}sseldorf ; [mit CD-ROM] / Veranst.: MESAGO-Messe-Frankfurt GmbH, Stuttgart. Hrsg.: Kurt Feser},
  publisher = {VDE-Verl.},
  address   = {Berlin [u.a.]},
  isbn      = {3-8007-2810-9},
  pages     = {79 -- 86},
  year      = {2004},
  language  = {de}
}
@article{Hirschberg2004,
  author    = {Hirschberg, Rainer},
  title     = {{\"O}ffentliche Geb{\"a}ude in der Vorreiterrolle. Studie fordert Anreiz zur Energieeffizienz},
  series = {Industriebau. 50 (2004), H. 2},
  journal   = {Industriebau. 50 (2004), H. 2},
  isbn      = {0935-2023},
  pages     = {46 -- 47},
  year      = {2004},
  language  = {de}
}
@article{Hirschberg2004,
  author    = {Hirschberg, Rainer},
  title     = {Energieeffizienz bei {\"o}ffentlichen Geb{\"a}uden},
  series = {Baumeister. 101 (2004), H. 2},
  journal   = {Baumeister. 101 (2004), H. 2},
  isbn      = {0005-674X},
  pages     = {36 -- 37},
  year      = {2004},
  language  = {de}
}