@article{SEMR_2015_12_a21,
     author = {A. G. Pinus},
     title = {On some of logical closures on universal algebras},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {698--703},
     publisher = {mathdoc},
     volume = {12},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2015_12_a21/}
}