@article{MMO_1973_29_a5,
     author = {M. S. Burgin},
     title = {Subalgebras of free products of linear $\Omega$-algebras},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {101--117},
     publisher = {mathdoc},
     volume = {29},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1973_29_a5/}
}