@article{Hagemann1978,
  author    = {Hagemann, Hans-J{\"u}rgen},
  title     = {Electrical properties of acceptor-doped BaTiO3 ceramic. Hagemann, H. J.},
  series = {Berichte der Deutschen Keramischen Gesellschaft. 55 (1978)},
  journal   = {Berichte der Deutschen Keramischen Gesellschaft. 55 (1978)},
  isbn      = {0365-9542},
  pages     = {353 -- 355},
  year      = {1978},
  language  = {en}
}
@article{Hagemann1978,
  author    = {Hagemann, Hans-J{\"u}rgen},
  title     = {Reduction of hysteresis losses of ferroelectric BaTiO3. Hagemann, H. J.},
  series = {Ferroelectrics. 22 (1978)},
  journal   = {Ferroelectrics. 22 (1978)},
  isbn      = {0015-0193},
  pages     = {743 -- 743},
  year      = {1978},
  language  = {en}
}
@article{Zastrow1978,
  author    = {Zastrow, Udo},
  title     = {Zur Berechnung anisotroper Scheiben durch singul{\"a}re Integralgleichungen},
  series = {ZAMM - Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik.},
  volume    = {58},
  journal   = {ZAMM - Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik.},
  number    = {6},
  publisher = {Wiley-VCH},
  address   = {Berlin},
  isbn      = {1521-4001},
  doi       = {10.1002/zamm.19780580605},
  pages     = {T132 -- T133},
  year      = {1978},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Tabellenfreie Berechnung der Einkommensteuer mit Hilfe des programmierbaren Taschenrechners},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {77},
  journal   = {Elektrizit{\"a}tswirtschaft},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {486 -- 489},
  year      = {1978},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Wirtschaftlichkeit von Investitionen},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {77},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {3},
  publisher = {VWEW-Energieverlag},
  address   = {Frankfurt/Main},
  issn      = {0013-5496},
  pages     = {73 -- 76},
  year      = {1978},
  language  = {de}
}
@article{Alt1978,
  author    = {Alt, Helmut},
  title     = {Intervallschalter mit getrennt einstellbarer Pulszeit und Pulszahl},
  series = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler},
  volume    = {27},
  journal   = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler},
  number    = {H. 14},
  publisher = {WEKA Fachmedien},
  address   = {Haar},
  issn      = {0013-5658},
  pages     = {76},
  year      = {1978},
  language  = {de}
}
@article{HagemannIhrig1979,
  author    = {Hagemann, Hans-J{\"u}rgen and Ihrig, H.},
  title     = {Valence change and phase stability of 3d-doped BaTiO3 annealed in oxygen and hydrogen. Hagemann, H. J.; Ihrig, H.},
  series = {Physical Review B.. 20 (1979), H. 9},
  journal   = {Physical Review B.. 20 (1979), H. 9},
  isbn      = {1095-3795},
  pages     = {3871 -- 3878},
  year      = {1979},
  language  = {en}
}
@article{ZastrowPanagiotopoulos1979,
  author    = {Zastrow, Udo and Panagiotopoulos, P. D.},
  title     = {An integral "Equation" approach to the unilateral contact problem},
  series = {ZAMM - Zeitschrift f{\"u}r angewandte Mathematik und Mechanik. 59 (1979), H. 8},
  journal   = {ZAMM - Zeitschrift f{\"u}r angewandte Mathematik und Mechanik. 59 (1979), H. 8},
  isbn      = {1521-4001},
  pages     = {392 -- 393},
  year      = {1979},
  language  = {en}
}
@article{Zastrow1979,
  author    = {Zastrow, Udo},
  title     = {Anisotrope Scheiben mit gemischten Randbedingungen},
  series = {ZAMM - Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik. 59 (1979), H. 5},
  journal   = {ZAMM - Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik. 59 (1979), H. 5},
  isbn      = {1521-4001},
  pages     = {T218 -- T219},
  year      = {1979},
  language  = {de}
}
@book{Zastrow1979,
  author    = {Zastrow, Udo},
  title     = {Berechnung von anisotropen Scheiben mit gemischten Randbedingungen durch singulaere Integralgleichungen},
  year      = {1979},
  language  = {de}
}
@article{Alt1979,
  author    = {Alt, Helmut},
  title     = {Isolierte Freileitungen, ein Betriebsmittel f{\"u}r schwierige Trassenf{\"u}hrung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 78},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 10},
  issn      = {0013-5496},
  pages     = {250 -- 256},
  year      = {1979},
  language  = {de}
}
@book{Alt1979,
  author    = {Alt, Helmut},
  title     = {Angewandte Mathematik, Finanzmathematik, Statistik, Informatik f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 1)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04150-1},
  pages     = {VIII, 162 S : graph. Darst.},
  year      = {1979},
  language  = {de}
}
@article{SammFaissnerFrenzeletal.1980,
  author    = {Samm, Doris and Faissner, H. and Frenzel, E. and Heinrigs, W.},
  title     = {Limit on axion decay into an electron pair / H. Faissner, E. Frenzel, W. Heinrigs, A. Preussger, D. Samm und U. Samm},
  series = {Physics Letters B. Vol. 96 (1980), H. Issues 1-2},
  journal   = {Physics Letters B. Vol. 96 (1980), H. Issues 1-2},
  pages     = {201 -- 205},
  year      = {1980},
  language  = {en}
}
@article{SammFaissnerFrenzeletal.1980,
  author    = {Samm, Doris and Faissner, H. and Frenzel, E. and Heinrigs, W.},
  title     = {Observation of the two-photon decay of a light penetrating particle / H. Faissner, E. Frenzel, W. Heinrigs, A. Preussger, D. Samm und U. Samm},
  series = {Physics Letters B. Vol. 103 (1980), H. Issues 3},
  journal   = {Physics Letters B. Vol. 103 (1980), H. Issues 3},
  pages     = {234 -- 240},
  year      = {1980},
  language  = {en}
}
@book{Hagemann1980,
  author    = {Hagemann, Hans-J{\"u}rgen},
  title     = {Akzeptorionen in BaTiO3 und SrTiO3 und ihre Auswirkungen auf die Eigenschaften von Titanatkeramiken},
  pages     = {IX, 145 S. : zahlr. graph. Darst.},
  year      = {1980},
  language  = {de}
}
@article{HagemannIhrig1980,
  author    = {Hagemann, Hans-J{\"u}rgen and Ihrig, H.},
  title     = {BaTiO3 dotiert mit 3d-Ionen: Valenzen, Leerstellen und ihre Auswirkungen. Hagemann, H. J.; Ihrig, H.},
  series = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 3 (1980)},
  journal   = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 3 (1980)},
  pages     = {249 -- 252},
  year      = {1980},
  language  = {de}
}
@article{HagemannHeroGonser1980,
  author    = {Hagemann, Hans-J{\"u}rgen and Hero, A. and Gonser, U.},
  title     = {The valence change of Fe in BaTiO3 studied by M{\"o}ßbauer effect and gravimetry. Hagemann, H. J.; Hero, A.; Gonser, U.},
  series = {Physica Status Solidi (A) - Applied Research. 61 (1980)},
  journal   = {Physica Status Solidi (A) - Applied Research. 61 (1980)},
  isbn      = {0031-8965},
  pages     = {63 -- 72},
  year      = {1980},
  language  = {en}
}
@book{Wosnitza1980,
  author    = {Wosnitza, Franz},
  title     = {Freifeldmessungen an Violinen und geh{\"o}rgem{\"a}ße Bewertungen ihrer Frequenzen},
  year      = {1980},
  language  = {de}
}
@article{ZastrowRieder1980,
  author    = {Zastrow, Udo and Rieder, G.},
  title     = {Zur Eingrenzung der Eigenfrequenzen eines station{\"a}r schwingenden elastischen K{\"o}rpers mittels Integralgleichungen},
  series = {ZAMM - Zeitschrift f{\"u}r angewandte Mathematik und Mechanik. 60 (1980), H. 6},
  journal   = {ZAMM - Zeitschrift f{\"u}r angewandte Mathematik und Mechanik. 60 (1980), H. 6},
  isbn      = {1521-4001},
  pages     = {T149 -- T150},
  year      = {1980},
  language  = {de}
}
@article{ZastrowRieder1980,
  author    = {Zastrow, Udo and Rieder, G.},
  title     = {Bracketing eigenvalues of an oscillating elastic body by integral equations},
  series = {Bracketing of eigenfrequencies of continous structures : Euromech Colloquium, no. 112, M{\´a}traf{\"u}red (Hungary), 21 - 23 February, 1979 / ed. by {\`A}. Bosznay},
  journal   = {Bracketing of eigenfrequencies of continous structures : Euromech Colloquium, no. 112, M{\´a}traf{\"u}red (Hungary), 21 - 23 February, 1979 / ed. by {\`A}. Bosznay},
  publisher = {Akad. Kiad{\´o}},
  address   = {Budapest},
  isbn      = {963-05-2625-5},
  pages     = {421 -- 434},
  year      = {1980},
  language  = {en}
}