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@article{AL_1994_33_1_a1, author = {A. I. Budkin}, title = {Lattice of quasivarieties of nilpotent groups}, journal = {Algebra i logika}, pages = {25--36}, publisher = {mathdoc}, volume = {33}, number = {1}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1994_33_1_a1/} }
A. I. Budkin. Lattice of quasivarieties of nilpotent groups. Algebra i logika, Tome 33 (1994) no. 1, pp. 25-36. http://geodesic.mathdoc.fr/item/AL_1994_33_1_a1/