Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1998_37_3_a0, author = {N. V. Bayanova}, title = {Coverings in the lattice of varieties of $l$-groups}, journal = {Algebra i logika}, pages = {253--269}, publisher = {mathdoc}, volume = {37}, number = {3}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1998_37_3_a0/} }
N. V. Bayanova. Coverings in the lattice of varieties of $l$-groups. Algebra i logika, Tome 37 (1998) no. 3, pp. 253-269. http://geodesic.mathdoc.fr/item/AL_1998_37_3_a0/