The membership question for ETOL-languages is polynomially complete

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Publisher	north-holland
Journal	Information Processing Letters
Citation APA Style AAA Style APA Style Cell Style Chicago Style Harvard Style IEEE Style MLA Style Nature Style Vancouver Style American-Institute-of-Physics Style Council-of-Science-Editors Style BibTex Format Endnote Format RIS Format CSL Format DOIs only Format	van Leeuwen, J. (1975). The membership question for ETOL-languages is polynomially complete. Information Processing Letters, 3(5), 138–143.

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