@article{DBLP:tr/ibm/LILOG42,
  author    = {Christoph Beierle and
               Walter G. Olthoff and
               Angi Vo{\ss}},
  title     = {Qualit{\"a}tssicherung durch Programmverifikation und algebraische
               Methoden in der Softwareentwicklung},
  journal   = {LILOG-Report},
  publisher = {IBM Deutschland GmbH},
  volume    = {42},
  year      = {1988},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}