@article{Courcelle1978255,
    Author = {Courcelle, Bruno},
    File = {A representation of trees by languages I - Courcelle (0) (0) - a - a - f.pdf},
    ISSN = {0304-3975},
    Journal = {Theoretical Computer Science},
    Number = {3},
    Pages = {255 - 279},
    Title = {A representation of trees by languages I},
    URL = {http://www.sciencedirect.com/science/article/pii/0304397578900087},
    Volume = {6},
    Year = {1978},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397578900087},
    bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(78)90008-7},
    date-added = {2013-12-12 09:34:15 +0000},
    date-modified = {2013-12-12 09:34:15 +0000},
    doi = {10.1016/0304-3975(78)90008-7}
}

@article{Courcelle1978255, Author = {Courcelle, Bruno}, File = {A representation of trees by languages I - Courcelle (0) (0) - a - a - f.pdf}, ISSN = {0304-3975}, Journal = {Theoretical Computer Science}, Number = {3}, Pages = {255 - 279}, Title = {A representation of trees by languages I}, URL = {http://www.sciencedirect.com/science/article/pii/0304397578900087}, Volume = {6}, Year = {1978}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0304397578900087}, bdsk-url-2 = {http://dx.doi.org/10.1016/0304-3975(78)90008-7}, date-added = {2013-12-12 09:34:15 +0000}, date-modified = {2013-12-12 09:34:15 +0000}, doi = {10.1016/0304-3975(78)90008-7} }