@article{ZastrowRieder2008,
  author    = {Udo Zastrow and G. Rieder},
  title     = {Bracketing eigenvalues of an oscillating elastic body by integral equations},
  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},
  pages     = {421 -- 434},
  year      = {2008},
}