@article{MZM_1972_11_5_a7,
     author = {M. S. Burgin},
     title = {Free factor algebras of free linear $\Omega$-algebras},
     journal = {Matemati\v{c}eskie zametki},
     pages = {537--544},
     publisher = {mathdoc},
     volume = {11},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_11_5_a7/}
}