Esser03'

BibTeX

@article{DBLP:journals/mlq/Esser03,
  author    = {Olivier Esser},
  title     = {On the axiom of extensionality in the positive set theory},
  journal   = {Math. Log. Q.},
  volume    = {49},
  number    = {1},
  year      = {2003},
  pages     = {97-100},
  ee        = {http://dx.doi.org/10.1002/malq.200310009},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}