Journal of Automata, Languages and Combinatorics formerly:
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@article{jalc060403, author = {D\"{o}m\"{o}si, P\'{a}l and \'{E}sik, Zolt\'{a}n}, title = {Homomorphic Simulation and Letichevsky's Criterion}, journal = jalc, year = 2001, volume = 6, number = 4, pages = {427--436} }