@article{LatticeOfConditions,
  author = "A. W. Roscoe and P.J. Collins and G.M. Reed and M.E. Rudin",
  journal = "{Proc. Amer. Math. Soc.}",
  month = "July",
  number = "94",
  pages = "487--496",
  title = "A lattice of conditions on topological spaces",
  url = "http://www.jstor.org/view/00029939/di970933/97p0219l/0",
  year = "1985",
}