Rose68'

BibTeX

@article{DBLP:journals/jcss/Rose68,
  author    = {Gene F. Rose},
  title     = {Closures which Preserve Finiteness in Families of Languages},
  journal   = {J. Comput. Syst. Sci.},
  volume    = {2},
  number    = {2},
  year      = {1968},
  pages     = {148-168},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}