MateescuRS97'

@article{DBLP:journals/ijfcs/MateescuRS97,
  author    = {Alexandru Mateescu and
               Grzegorz Rozenberg and
               Arto Salomaa},
  title     = {Geometric Transformations on Language Families: The Power
               of Symmetry},
  journal   = {Int. J. Found. Comput. Sci.},
  volume    = {8},
  number    = {1},
  year      = {1997},
  pages     = {1-14},
  ee        = {http://dx.doi.org/10.1142/S0129054197000021},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}