Digital plane preimage structure

@inproceedings{dcoeurjo_preimage,
      address = {Palermo, Italy},
      author = {Coeurjolly, D. and Sivignon, I. and Dupont, F. and Feschet, F. and Chassery, J. M.},
      booktitle = {International Workshop on Combinatorial Image
Analysis},
      editor = {Science, Elsevier},
      month = {May},
      series = {Electronic Notes in Discrete Mathematics},
      title = {Digital plane preimage structure},
      year = {2003}
}