BackW90'

BibTeX

@article{DBLP:journals/fac/BackW90,
  author    = {Ralph-Johan Back and
               Joakim von Wright},
  title     = {Refinement Concepts Formalised in Higher Order Logic},
  journal   = {Formal Asp. Comput.},
  volume    = {2},
  number    = {3},
  year      = {1990},
  pages     = {247-272},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}