@article{SM_1972_16_1_a5,
     author = {M. S. Burgin and V. A. Artamonov},
     title = {Some properties of subalgebras in varieties of linear $\Omega$-albebras},
     journal = {Sbornik. Mathematics},
     pages = {69--85},
     year = {1972},
     volume = {16},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_16_1_a5/}
}