@article{HillenEckenbachQuadfliegetal.1991,
  author    = {Hillen, Walter and Eckenbach, W. and Quadflieg, Peter and Zaengel, Thomas T.},
  title     = {Signal-to-noise performance of a CsI fluorescent screen},
  series = {Medical Imaging V: Image physics},
  journal   = {Medical Imaging V: Image physics},
  isbn      = {0-8194-0538-8},
  pages     = {120 -- 131},
  year      = {1991},
  language  = {en}
}
@article{HillenRuppSchiebeletal.1989,
  author    = {Hillen, Walter and Rupp, S. and Schiebel, U. and Zaengel, Thomas T.},
  title     = {Imaging performance of a selenium-based detector for high-resolution radiography},
  series = {Medical Imaging III: Image Formation},
  journal   = {Medical Imaging III: Image Formation},
  isbn      = {0-8194-0125-0},
  pages     = {296},
  year      = {1989},
  language  = {en}
}
@article{HillenSchiebelZaengel1988,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {A selenium-based detector for digital slot-radiography},
  series = {Medical Imaging II},
  journal   = {Medical Imaging II},
  pages     = {253},
  year      = {1988},
  language  = {en}
}
@article{HillenSchiebelZaengel1986,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {Image quality in selenium-based digital radiography. Schiebel, U.; Hillen, W.; Zaengel, T.},
  series = {Medical Imaging},
  journal   = {Medical Imaging},
  pages     = {176},
  year      = {1986},
  language  = {en}
}
@article{HillenSchiebelZaengel1987,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {Imaging performance of a digital storage phosphor system},
  series = {Medical Physics. 14 (1987), H. 5},
  journal   = {Medical Physics. 14 (1987), H. 5},
  isbn      = {0094-2405},
  pages     = {744 -- 751},
  year      = {1987},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {A measurement of \&\#963;tot(e+e\&\#8722; \&\#8594; hadrons) for cm energies between 12.0 and 36.7 GeV. TASSO Collaboration},
  series = {Physics Letters B. 113 (1982), H. 6},
  journal   = {Physics Letters B. 113 (1982), H. 6},
  pages     = {499 -- 508},
  year      = {1982},
  language  = {en}
}
@misc{SponagelMasbergHartmann1999,
  author    = {Sponagel, Stefan and Masberg, Mariane and Hartmann, Jochen},
  title     = {Kraftfahrzeugk{\"u}hlwasserpumpe : Offenlegungsschrift DE19803739A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 12.08.1999},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {6 S. : Ill.},
  year      = {1999},
  language  = {de}
}
@misc{SponagelWachowitz1990,
  author    = {Sponagel, Stefan and Wachowitz, Waldemar},
  title     = {Wellendichtung : Offenlegungsschrift DE3830706A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 22.03.1990 / Anmelder: Fa. Carl Freudenberg},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {4 S. : Ill.},
  year      = {1990},
  language  = {de}
}
@misc{GrafGrossSponagel1987,
  author    = {Graf, G{\"u}nter and Groß, Heinz and Sponagel, Stefan},
  title     = {Verfahren zur Herstellung eines Dichtringes mit einer Dichtlippe : Patentschrift DE3621241C1 ; Ver{\"o}ffentlichungstag der Patenterteilung : 25.06.1987},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {5 S. : Ill.},
  year      = {1987},
  language  = {de}
}
@misc{SponagelGrafGross1987,
  author    = {Sponagel, Stefan and Graf, G{\"u}nter and Groß, Heinz},
  title     = {Verfahren zur Herstellung eines Dichtringes : Patentschrift DE3621242C1 ; Ver{\"o}ffentlichungstag der Patenterteilung : 25.06.1987 / Anmelder: Fa. Carl Freudenberg. Erfinder: G{\"u}nter Graf ; Heinz Groß ; Stefan Sponagel},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {5 S. : Ill.},
  year      = {1987},
  language  = {de}
}