@article{IVM_1976_5_a0,
     author = {S. M. Burgin},
     title = {Multiplication of varieties of linear $\Omega$-algebras},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--14},
     publisher = {mathdoc},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_5_a0/}
}