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@article{DBLP:journals/siamcomp/RoyS07,
author = {Amitabha Roy and
Howard Straubing},
title = {Definability of Languages by Generalized First-Order Formulas
over N$^{\mbox{+}}$},
journal = {SIAM J. Comput.},
volume = {37},
number = {2},
year = {2007},
pages = {502-521},
ee = {http://dx.doi.org/10.1137/060658035},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
Copyright © 2007-06-02 by Michael Ley (ley@uni-trier.de)