Salomaa89'

BibTeX

@article{DBLP:journals/eatcs/Salomaa89,
  author    = {Arto Salomaa},
  title     = {The Formal Language Theory Column},
  journal   = {Bulletin of the EATCS},
  volume    = {38},
  year      = {1989},
  pages     = {107-122},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}