@book{Hegewald1976,
  author    = {Hegewald, Ulf},
  title     = {Ulf Hegewald, Schaupl{\"a}tze 1974 - 76 : 10 August 1976 / Hrsg.: Neue Galerie Sammlung Ludwig, Aachen. Red. u. Gestaltung: Wolfgang Becker ...},
  address   = {Aachen},
  pages     = {ca. 100 S. : {\"u}berw. Ill.},
  year      = {1976},
  language  = {de}
}
@article{HeuermannSadeghfamBoehm2005,
  author    = {Heuermann, Holger and Sadeghfam, Arash and Boehm, H.},
  title     = {Ultra Compact Multi-Mode Filter with Novel Rat-Race Inductor. Sadeghfam, Arash; Heuermann, Holger; Boehm, H.},
  series = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 2},
  journal   = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 2},
  publisher = {Horizon House Publ},
  address   = {London},
  isbn      = {2-9600551-0-1},
  pages     = {4 pp.},
  year      = {2005},
  language  = {en}
}
@article{SchererJacobiCastilloetal.2009,
  author    = {Scherer, Ulrich W. and Jacobi, M. and Castillo, J. and Foerstel, D. H.},
  title     = {Ultra-low-level measurements of 3H and 14C in wines and champagne / Scherer, U. W. ; Jacobi, M. ; Castillo, J. ; Foerstel, D. H.},
  series = {Radiation effects and defects in solids. 164 (2009), H. 5-6},
  journal   = {Radiation effects and defects in solids. 164 (2009), H. 5-6},
  isbn      = {1042-0150},
  pages     = {382 -- 385},
  year      = {2009},
  language  = {en}
}
@article{FoersterMikulicsWuetal.2006,
  author    = {F{\"o}rster, Arnold and Mikulics, M. and Wu, S. and Marso, M.},
  title     = {Ultrafast and Highly Sensitive Photodetectors With Recessed Electrodes Fabricated on Low-Temperature-Grown GaAs. Mikulics, M.; Wu, S.; Marso, M.; Adam, R.; F{\"o}rster, A.; van der Hart, A.; Kordos, P.; L{\"u}th, H.; Sobolewski, R.},
  series = {IEEE Photonics Technology Letters. 18 (2006), H. 7},
  journal   = {IEEE Photonics Technology Letters. 18 (2006), H. 7},
  pages     = {820 -- 822},
  year      = {2006},
  language  = {en}
}
@article{MikulicsAdamKordosetal.2005,
  author    = {Mikulics, M. and Adam, R. and Kordos, P. and F{\"o}rster, Arnold and L{\"u}th, H. and Wu, S. and Zheng, X. and Sobolewski, R.},
  title     = {Ultrafast low-temperature-grown epitaxial GaAs photodetectors transferred on flexible plastic substrates},
  series = {IEEE photonics technology letters : IEEE PTL. 17 (2005), H. 8},
  journal   = {IEEE photonics technology letters : IEEE PTL. 17 (2005), H. 8},
  isbn      = {1041-1135},
  pages     = {1725 -- 1727},
  year      = {2005},
  language  = {en}
}
@article{FoersterMarsoMikulicsetal.2005,
  author    = {F{\"o}rster, Arnold and Marso, M. and Mikulics, V. V. and Adam, R.},
  title     = {Ultrafast Phenomena in Freestanding LT-GaAs Devices. Marso, M.; Mikulics, V. V.; Adam, R.; Wu, S.; Zheng, X.; Camara, I.; Siebe, N. Y.; F{\"o}rster, A.; G{\"u}sten, R.; Kordos, P.; Sobolewski, R.},
  series = {Acta physica Polonica / A. 107 (2005), H. 1},
  journal   = {Acta physica Polonica / A. 107 (2005), H. 1},
  isbn      = {0587-4246},
  pages     = {109 -- 117},
  year      = {2005},
  language  = {en}
}
@article{Foerster1995,
  author    = {F{\"o}rster, Arnold},
  title     = {Ultrahigh frequency measurements of magnetic penetration length and surface impedance of YBa2Cu3O7-x microstriplines on Si and GaAs substrates . R{\"u}ders, F; Hollricher, O.; Copetti, C. A. ; F{\"o}rster, A. ; Buchal, Ch. ; Prusseit, W. ; Kinder, H.},
  series = {Journal of Applied Physics. 77 (1995), H. 10},
  journal   = {Journal of Applied Physics. 77 (1995), H. 10},
  isbn      = {1089-7550},
  pages     = {5282 -- 5286},
  year      = {1995},
  language  = {en}
}
@article{LaackAlbrechtCasser1987,
  author    = {Laack, Walter van and Albrecht, T. and Casser, H. R.},
  title     = {Ultraschalltherapie in der Praxis},
  series = {Physikalische Therapie in Theorie und Praxis},
  volume    = {8},
  journal   = {Physikalische Therapie in Theorie und Praxis},
  number    = {10},
  isbn      = {0178-9201},
  pages     = {628 -- 631},
  year      = {1987},
  language  = {de}
}
@article{LaackAlbrecht1987,
  author    = {Laack, Walter van and Albrecht, T.},
  title     = {Ultraschalltherapie in der Praxis},
  series = {ZFA - Zeitschrift f{\"u}r Allgemeinmedizin},
  volume    = {63},
  journal   = {ZFA - Zeitschrift f{\"u}r Allgemeinmedizin},
  number    = {19},
  isbn      = {0341-9835},
  pages     = {605 -- 608},
  year      = {1987},
  language  = {de}
}
@article{BergSchleserDelidovichetal.2018,
  author    = {Berg, Alexander-Karl and Schleser, Markus and Delidovich, Artem and Houben, Alexander},
  title     = {Ultraschallunterst{\"u}tzter Schmelzklebstoffauftrag},
  series = {adh{\"a}sion KLEBEN \& DICHTEN},
  volume    = {Volume 62},
  journal   = {adh{\"a}sion KLEBEN \& DICHTEN},
  number    = {Issue 12},
  publisher = {Springer},
  doi       = {10.1007/s35145-018-0089-z},
  pages     = {32 -- 37},
  year      = {2018},
  language  = {de}
}