@article{SEMR_2020_17_a42,
     author = {A. I. Budkin},
     title = {Quasivarieties of nilpotent groups of axiomatic rank~$4$},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {2131--2141},
     publisher = {mathdoc},
     volume = {17},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2020_17_a42/}
}