@article{KleineBuening1989343,
    Author = {Buening, Hans Kleine and Lettmann, Theodor and Mayr, Ernst W.},
    File = {Projections of vector addition system reachability sets are semilinear - Buening, Lettmann, Mayr (0) (0) - a - a - l.pdf},
    ISSN = {0304-3975},
    Journal = {Theoretical Computer Science},
    Keywords = {vector addition systems and semilinear sets},
    Number = {3},
    Pages = {343 - 350},
    Title = {Projections of vector addition system reachability sets are semilinear},
    URL = {http://www.sciencedirect.com/science/article/pii/0304397589900558},
    Volume = {64},
    Year = {1989},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397589900558},
    bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(89)90055-8},
    date-added = {2012-10-30 21:53:59 +0000},
    date-modified = {2012-10-30 21:54:25 +0000},
    doi = {10.1016/0304-3975(89)90055-8}
}

@article{KleineBuening1989343, Author = {Buening, Hans Kleine and Lettmann, Theodor and Mayr, Ernst W.}, File = {Projections of vector addition system reachability sets are semilinear - Buening, Lettmann, Mayr (0) (0) - a - a - l.pdf}, ISSN = {0304-3975}, Journal = {Theoretical Computer Science}, Keywords = {vector addition systems and semilinear sets}, Number = {3}, Pages = {343 - 350}, Title = {Projections of vector addition system reachability sets are semilinear}, URL = {http://www.sciencedirect.com/science/article/pii/0304397589900558}, Volume = {64}, Year = {1989}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397589900558}, bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(89)90055-8}, date-added = {2012-10-30 21:53:59 +0000}, date-modified = {2012-10-30 21:54:25 +0000}, doi = {10.1016/0304-3975(89)90055-8} }