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@article{SF_1982__25_134561, author = {G. Poll\'ak}, title = {On two classes of hereditarily finitely based semigroup identities.}, journal = {Semigroup forum}, pages = {9--34}, publisher = {mathdoc}, volume = {25}, year = {1982}, zbl = {0496.20042}, url = {http://geodesic.mathdoc.fr/item/SF_1982__25_134561/} }
G. Pollák. On two classes of hereditarily finitely based semigroup identities.. Semigroup forum, Tome 25 (1982), pp. 9-34. http://geodesic.mathdoc.fr/item/SF_1982__25_134561/