@article{VNGU_2018_18_3_a1,
     author = {A. I. Budkin},
     title = {On unsolvable $Q$-theories of ring varieties},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {20--26},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2018_18_3_a1/}
}