@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/}
}