Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1993_3_a4, author = {B. M. Vernikov}, title = {Identities and quasi-identities in lattices of pseudovarieties}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {40--50}, publisher = {mathdoc}, number = {3}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1993_3_a4/} }
B. M. Vernikov. Identities and quasi-identities in lattices of pseudovarieties. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1993), pp. 40-50. http://geodesic.mathdoc.fr/item/IVM_1993_3_a4/