@article{IVM_1990_7_a2,
     author = {S. A. Gurchenkov},
     title = {The {non-Brouwerian} property and continuality of the lattice of nilpotent $l$-varieties},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {17--22},
     publisher = {mathdoc},
     number = {7},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_7_a2/}
}