CohenB71'

BibTeX

@article{DBLP:journals/jcss/CohenB71,
  author    = {Rina S. Cohen and
               Janusz A. Brzozowski},
  title     = {Dot-Depth of Star-Free Events},
  journal   = {J. Comput. Syst. Sci.},
  volume    = {5},
  number    = {1},
  year      = {1971},
  pages     = {1-16},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}