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@article{SF_1976__12_134159, author = {A Pollatchek}, title = {Relationships between conbinatorics and 0-simple semigroups.}, journal = {Semigroup forum}, pages = {78--82}, publisher = {mathdoc}, volume = {12}, year = {1976}, zbl = {0322.20029}, url = {http://geodesic.mathdoc.fr/item/SF_1976__12_134159/} }
A Pollatchek. Relationships between conbinatorics and 0-simple semigroups.. Semigroup forum, Tome 12 (1976), pp. 78-82. http://geodesic.mathdoc.fr/item/SF_1976__12_134159/