@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}
}
@article{Zastrow1980,
  author    = {Zastrow, Udo},
  title     = {Die Airysche Spannungsfunktion f{\"u}r die unendliche anisotrope, orthotrope und isotrope Scheibe},
  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     = {T159 -- T160},
  year      = {1980},
  language  = {de}
}
@article{Alt1980,
  author    = {Alt, Helmut},
  title     = {Kurzschlußstromberechnung},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 79},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 10},
  issn      = {0013-5496},
  pages     = {379 -- 382},
  year      = {1980},
  language  = {de}
}
@book{Alt1980,
  author    = {Alt, Helmut},
  title     = {Allgemeine Elektrotechnik, Nachrichtentechnik, Impulstechnik f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 2)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04151-X},
  pages     = {VII, 109 S. : graph. Darst.},
  year      = {1980},
  language  = {de}
}
@book{Alt1980,
  author    = {Alt, Helmut},
  title     = {Elektrische Energietechnik, Steuerungstechnik, Elektrizit{\"a}tswirtschaft f{\"u}r UPN-Rechner. (Anwendung programmierbarer Taschenrechner ; 6)},
  publisher = {Vieweg},
  address   = {Braunschweig [u.a.]},
  isbn      = {3-528-04180-3},
  pages     = {VIII, 118 S. : graph. Darst.},
  year      = {1980},
  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}
}