@article{AL_1991_30_2_a0,
     author = {A. I. Budkin},
     title = {Independent axiomatizability of quasivarieties of soluble
},
     journal = {Algebra i logika},
     pages = {125--153},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1991_30_2_a0/}
}