@article{1102868226, author = {Ellentuck, Erik}, title = {Semigroups, Horn sentences and isolic structures.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 87-101}, language = {en}, url = {http://dml.mathdoc.fr/item/1102868226} }
Ellentuck, Erik. Semigroups, Horn sentences and isolic structures.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 87-101. http://gdmltest.u-ga.fr/item/1102868226/