Jager07'

@article{DBLP:journals/apal/Jager07,
  author    = {Gerhard J{\"a}ger},
  title     = {On Feferman's operational set theory OST},
  journal   = {Ann. Pure Appl. Logic},
  volume    = {150},
  number    = {1-3},
  year      = {2007},
  pages     = {19-39},
  ee        = {http://dx.doi.org/10.1016/j.apal.2007.09.001},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}