@article{Jedrzejowicz:IPL:1983,
    Author = {J{\k e}drzejowicz, Joanna},
    ISSN = {0020-0190},
    Journal = {Information Processing Letters},
    Keywords = {context-sensitive languages},
    Number = {2},
    Pages = {51--54},
    Title = {On the enlargement of the class of regular languages by the shuffle closure},
    URL = {http://www.sciencedirect.com/science/article/pii/0020019083900236},
    Volume = {16},
    Year = {1983},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0020019083900236},
    bdsk-url-2 = {http://dx.doi.org/10.1016/0020-0190(83)90023-6},
    date-added = {2017-01-10 12:51:24 +0000},
    date-modified = {2017-01-10 12:51:24 +0000},
    doi = {10.1016/0020-0190(83)90023-6}
}

@article{Jedrzejowicz:IPL:1983, Author = {J{\k e}drzejowicz, Joanna}, ISSN = {0020-0190}, Journal = {Information Processing Letters}, Keywords = {context-sensitive languages}, Number = {2}, Pages = {51--54}, Title = {On the enlargement of the class of regular languages by the shuffle closure}, URL = {http://www.sciencedirect.com/science/article/pii/0020019083900236}, Volume = {16}, Year = {1983}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0020019083900236}, bdsk-url-2 = {http://dx.doi.org/10.1016/0020-0190(83)90023-6}, date-added = {2017-01-10 12:51:24 +0000}, date-modified = {2017-01-10 12:51:24 +0000}, doi = {10.1016/0020-0190(83)90023-6} }