@article{AL_1989_28_5_a2,
     author = {A. I. Budkin},
     title = {$Q$-theories of $2$-generated groups with a given},
     journal = {Algebra i logika},
     pages = {513--523},
     publisher = {mathdoc},
     volume = {28},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1989_28_5_a2/}
}