Humberstone95'

BibTeX

@article{DBLP:journals/ndjfl/Humberstone95,
  author    = {Lloyd Humberstone},
  title     = {The Logic of Non-contingency},
  journal   = {Notre Dame Journal of Formal Logic},
  volume    = {36},
  number    = {2},
  year      = {1995},
  pages     = {214-229},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}