CangelmiC00'

@article{DBLP:journals/ejc/CangelmiC00,
  author    = {Leonardo Cangelmi and
               Paola Cellini},
  title     = {Algebraic Hypermap Morphisms},
  journal   = {Eur. J. Comb.},
  volume    = {21},
  number    = {5},
  year      = {2000},
  pages     = {555-561},
  ee        = {http://dx.doi.org/10.1006/eujc.1999.0389},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}