@incollection{flat:04,
    Author = {Leroux, J{\'e}r{\^o}me and Sutre, Gr{\'e}goire},
    BookTitle = {CONCUR 2004 - Concurrency Theory},
    Editor = {Gardner, Philippa and Yoshida, Nobuko},
    File = {On Flatness for 2-Dimensional Vector Addition Systems with States - Leroux, Sutre (0) (0) - a - a - y.pdf},
    ISBN = {978-3-540-22940-7},
    Keywords = {flat counter automata and vector addition systems and readme},
    Pages = {402-416},
    Publisher = {Springer Berlin Heidelberg},
    Series = {Lecture Notes in Computer Science},
    Title = {On Flatness for 2-Dimensional Vector Addition Systems with States},
    URL = {http://dx.doi.org/10.1007/978-3-540-28644-8\_26},
    Volume = {3170},
    Year = {2004},
    bdsk-url-1 = {http://dx.doi.org/10.1007/978-3-540-28644-8\_26},
    date-added = {2013-10-25 09:21:17 +0000},
    date-modified = {2013-10-25 09:21:37 +0000},
    doi = {10.1007/978-3-540-28644-8_26}
}

@incollection{flat:04, Author = {Leroux, J{\'e}r{\^o}me and Sutre, Gr{\'e}goire}, BookTitle = {CONCUR 2004 - Concurrency Theory}, Editor = {Gardner, Philippa and Yoshida, Nobuko}, File = {On Flatness for 2-Dimensional Vector Addition Systems with States - Leroux, Sutre (0) (0) - a - a - y.pdf}, ISBN = {978-3-540-22940-7}, Keywords = {flat counter automata and vector addition systems and readme}, Pages = {402-416}, Publisher = {Springer Berlin Heidelberg}, Series = {Lecture Notes in Computer Science}, Title = {On Flatness for 2-Dimensional Vector Addition Systems with States}, URL = {http://dx.doi.org/10.1007/978-3-540-28644-8_26}, Volume = {3170}, Year = {2004}, bdsk-url-1 = {http://dx.doi.org/10.1007/978-3-540-28644-8_26}, date-added = {2013-10-25 09:21:17 +0000}, date-modified = {2013-10-25 09:21:37 +0000}, doi = {10.1007/978-3-540-28644-8_26} }