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@article{SF_1974__6_133973, author = {M. Yamada}, title = {Note on a certain class of orthodox semigroups.}, journal = {Semigroup forum}, pages = {180--188}, publisher = {mathdoc}, volume = {6}, year = {1974}, zbl = {0255.20040}, url = {http://geodesic.mathdoc.fr/item/SF_1974__6_133973/} }
M. Yamada. Note on a certain class of orthodox semigroups.. Semigroup forum, Tome 6 (1974), pp. 180-188. http://geodesic.mathdoc.fr/item/SF_1974__6_133973/