@article {exbranching,
    AUTHOR = {Gaucher, P.},
     TITLE = {Homological properties of non-deterministic branchings of
              mergings in higher dimensional automata},
   JOURNAL = {Homology Homotopy Appl.},
  FJOURNAL = {Homology, Homotopy and Applications},
    VOLUME = {7},
      YEAR = {2005},
    NUMBER = {1},
     PAGES = {51--76 (electronic)},
      ISSN = {1532-0081},
   MRCLASS = {55N35 (55P99 68Q70 68Q85)},
  MRNUMBER = {MR2138350 (2006a:55008)},
MRREVIEWER = {Friedrich W. Bauer},
}