@inproceedings {homotopybranching,
    author = "P. Gaucher",
    title = "The homotopy branching space of a flow",
    booktitle = "Electronic Notes in Theoretical Computer Science",
    volume = "100",
    OPTissue = "2",
    publisher = "Elsevier Science Publishers",
    OPTeditor = "Patrick Cousot, Eric Goubault, Jeremy Gunawardena, Maurice Herlihy, Martin Rau{\ss}en and Vladimiro Sassone",
    year = "2004",
    PAGES = {15pp}
}