@article{Hopcroft1979135,
    Author = {Hopcroft, John and Pansiot, Jean-Jacques},
    File = {On the reachability problem for 5-dimensional vector addition systems - Hopcroft, Pansiot (0) (0) - a - a - g.pdf},
    ISSN = {0304-3975},
    Journal = {Theoretical Computer Science},
    Keywords = {vector addition systems and semilinear sets},
    Number = {2},
    Pages = {135 - 159},
    Title = {On the reachability problem for 5-dimensional vector addition systems},
    URL = {http://www.sciencedirect.com/science/article/pii/0304397579900410},
    Volume = {8},
    Year = {1979},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397579900410},
    bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(79)90041-0},
    date-added = {2012-10-31 09:22:48 +0000},
    date-modified = {2012-10-31 09:23:11 +0000},
    doi = {10.1016/0304-3975(79)90041-0}
}

@article{Hopcroft1979135, Author = {Hopcroft, John and Pansiot, Jean-Jacques}, File = {On the reachability problem for 5-dimensional vector addition systems - Hopcroft, Pansiot (0) (0) - a - a - g.pdf}, ISSN = {0304-3975}, Journal = {Theoretical Computer Science}, Keywords = {vector addition systems and semilinear sets}, Number = {2}, Pages = {135 - 159}, Title = {On the reachability problem for 5-dimensional vector addition systems}, URL = {http://www.sciencedirect.com/science/article/pii/0304397579900410}, Volume = {8}, Year = {1979}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397579900410}, bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(79)90041-0}, date-added = {2012-10-31 09:22:48 +0000}, date-modified = {2012-10-31 09:23:11 +0000}, doi = {10.1016/0304-3975(79)90041-0} }