@article{DBLP:journals/apal/CzelakowskiP04,
  author    = {Janusz Czelakowski and
               Don Pigozzi},
  title     = {Fregean logics},
  journal   = {Ann. Pure Appl. Logic},
  volume    = {127},
  number    = {1-3},
  year      = {2004},
  pages     = {17-76},
  ee        = {http://dx.doi.org/10.1016/j.apal.2003.11.008},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}