Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1986__34_134834, author = {L. Pol\'ak and J. Kadourek}, title = {On the word problem for free completely regular semigroups.}, journal = {Semigroup forum}, pages = {127--138}, publisher = {mathdoc}, volume = {34}, year = {1986}, zbl = {0607.20031}, url = {http://geodesic.mathdoc.fr/item/SF_1986__34_134834/} }
L. Polák; J. Kadourek. On the word problem for free completely regular semigroups.. Semigroup forum, Tome 34 (1986), pp. 127-138. http://geodesic.mathdoc.fr/item/SF_1986__34_134834/