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This research was supported by the Russian Foundation for Fundamental Research (Grant 94-01-00802-a).
Translated fromSibirskii Matematicheskii Zhurnal, Vol. 36, No. 6, pp. 1336–1341, November–December, 1995.
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Il'inykh, A.P. Groupoids of orderq(q±1)/2,q=2r, with automorphism group isomorphic toSL(2,q). Sib Math J 36, 1159–1163 (1995). https://doi.org/10.1007/BF02106838
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DOI: https://doi.org/10.1007/BF02106838