@article{GDZPPN001255401, title = {Inverse semigroup varieties generated by E-unitary semigroups.}, journal = {Semigroup forum}, volume = {24}, year = {1982}, pages = {87-88}, zbl = {0503.20023}, url = {http://dml.mathdoc.fr/item/GDZPPN001255401} }
Pastijn, F. Inverse semigroup varieties generated by E-unitary semigroups.. Semigroup forum, Tome 24 (1982) pp. 87-88. http://gdmltest.u-ga.fr/item/GDZPPN001255401/