@article{IVM_1978_4_a4,
     author = {V. B. Lender},
     title = {Monogenic subgroupoids of a~groupoid of prevarieties of lattices},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {32--41},
     publisher = {mathdoc},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1978_4_a4/}
}