@article{ZastrowPanagiotopoulos2008,
  author    = {Udo Zastrow and P. D. Panagiotopoulos},
  title     = {An integral "Equation" approach to the unilateral contact problem},
  journal   = {ZAMM - Zeitschrift f{\"u}r angewandte Mathematik und Mechanik. 59 (1979), H. 8},
  pages     = {392 -- 393},
  year      = {2008},
}