PierikB05'

@article{DBLP:journals/tcs/PierikB05,
  author    = {Cees Pierik and
               Frank S. de Boer},
  title     = {A proof outline logic for object-oriented programming},
  journal   = {Theor. Comput. Sci.},
  volume    = {343},
  number    = {3},
  year      = {2005},
  pages     = {413-442},
  ee        = {http://dx.doi.org/10.1016/j.tcs.2005.06.018},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}