EhrenfeuchtLR75'

@article{DBLP:journals/ijpp/EhrenfeuchtLR75,
  author    = {Andrzej Ehrenfeucht and
               K. P. Lee and
               Grzegorz Rozenberg},
  title     = {Subword complexities of various classes of deterministic
               developmental languages with interactions},
  journal   = {International Journal of Parallel Programming},
  volume    = {4},
  number    = {3},
  year      = {1975},
  pages     = {219-236},
  ee        = {http://dx.doi.org/10.1007/BF01007760},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}