Laflamme90'

BibTeX

@article{DBLP:journals/jsyml/Laflamme90,
  author    = {Claude Laflamme},
  title     = {Upward Directedness of the Rudin-Keisler Ordering of P-Points},
  journal   = {J. Symb. Log.},
  volume    = {55},
  number    = {2},
  year      = {1990},
  pages     = {449-456},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}