@article{DBLP:journals/fac/BeierleB96,
  author    = {Christoph Beierle and
               Egon B{\"o}rger},
  title     = {Specification and Correctness Proof of a WAM Extension with
               Abstract Type Constraints},
  journal   = {Formal Asp. Comput.},
  volume    = {8},
  number    = {4},
  year      = {1996},
  pages     = {428-462},
  ee        = {http://dx.doi.org/10.1007/BF01213533},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}