@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {Exclusive proton-antiproton production in two photon collisions . TASSO Collaboration},
  series = {Physics Letters B. 108 (1982), H. 1},
  journal   = {Physics Letters B. 108 (1982), H. 1},
  isbn      = {0370-2693},
  pages     = {67 -- 70},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {High pT hadron production in photon-photon collisions . TASSO Collaboration},
  series = {Physics Letters B. 107 (1982), H. 4},
  journal   = {Physics Letters B. 107 (1982), H. 4},
  isbn      = {0370-2693},
  pages     = {290 -- 296},
  year      = {1982},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {\&\#923;, Image production in e+e- annihilation at 33 GeV centre of mass energy. TASSO Collaboration},
  series = {Physics Letters B. 105 (1981), H. 4},
  journal   = {Physics Letters B. 105 (1981), H. 4},
  isbn      = {0370-2693},
  pages     = {75 -- 80},
  year      = {1981},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {Evidence for charged primary partons in e+e\&\#8722; \&\#8594; 2 jets. TASSO Collaboration},
  series = {Physics Letters B. 100 (1981), H. 4},
  journal   = {Physics Letters B. 100 (1981), H. 4},
  isbn      = {0370-2693},
  pages     = {357 -- 363},
  year      = {1981},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {Search for new sequential leptons in e+e- annihilation at petra energies. TASSO Collaboration},
  series = {Physics Letters B. 99 (1981), H. 2},
  journal   = {Physics Letters B. 99 (1981), H. 2},
  isbn      = {0370-2693},
  pages     = {163 -- 168},
  year      = {1981},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Evidence for a spin-1 gluon in three-jet events. TASSO Collaboration},
  series = {Physics Letters B. 97 (1980), H. 3-4},
  journal   = {Physics Letters B. 97 (1980), H. 3-4},
  isbn      = {0370-2693},
  pages     = {453 -- 458},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {RHO-RHO production by two photon scattering. TASSO Collaboration},
  series = {Physics Letters B. 97 (1980), H. 3-4},
  journal   = {Physics Letters B. 97 (1980), H. 3-4},
  isbn      = {0370-2693},
  pages     = {448 -- 452},
  year      = {1980},
  language  = {en}
}
@misc{SponagelGrafGross1989,
  author    = {Sponagel, Stefan and Graf, G{\"u}nter and Groß, Heinz},
  title     = {Method for manufacturing a sealing ring : United States Patent 4,861,536 ; date of patent: Aug. 12, 1989 / assignee: Firma Carl Freudenberg. Inventors: Gunter Graf ; Heinz Gross ; Stefan Sponagel},
  publisher = {[United States Patent and Trademark Office]},
  address   = {[Alexandria, VA]},
  pages     = {5 S. : Ill.},
  year      = {1989},
  language  = {en}
}
@misc{SponagelGrafGross1989,
  author    = {Sponagel, Stefan and Graf, G{\"u}nter and Groß, Heinz},
  title     = {Method for the manufacture of a sealing ring with a sealing lip having hydrodynamically acting return elements : United States Patent 4,850,097 ; date of patent: Jul. 25, 1989 / assignee: Firma Carl Freudenberg. Inventors: Gunter Graf ; Heinz Gross ; Stefan Sponagel},
  publisher = {[United States Patent and Trademark Office]},
  address   = {[Alexandria, VA]},
  pages     = {4 S. : Ill.},
  year      = {1989},
  language  = {en}
}
@article{StulpeHellwig1983,
  author    = {Stulpe, Werner and Hellwig, K.-E.},
  title     = {A Formulation of Quantum Stochastic Processes and Some of its Properties. Hellwig, K.-E.; Stulpe, W.},
  series = {Foundations of Physics. 13 (1983), H. 7},
  journal   = {Foundations of Physics. 13 (1983), H. 7},
  isbn      = {1572-9516},
  pages     = {673 -- 699},
  year      = {1983},
  language  = {en}
}