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@article{AUCMP_1989__30_1_a4, author = {Zejnullahu, A.}, title = {Free left distributive semigroups}, journal = {Acta Universitatis Carolinae. Mathematica et Physica}, pages = {29--32}, publisher = {mathdoc}, volume = {30}, number = {1}, year = {1989}, mrnumber = {1046073}, zbl = {0705.20055}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AUCMP_1989__30_1_a4/} }
Zejnullahu, A. Free left distributive semigroups. Acta Universitatis Carolinae. Mathematica et Physica, Tome 30 (1989) no. 1, pp. 29-32. http://geodesic.mathdoc.fr/item/AUCMP_1989__30_1_a4/