@article{MZM_1972_12_3_a11,
     author = {V. N. Matus},
     title = {Subalgebras of free products of algebras of the variety $\mathfrak{A}_{m,n}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {303--311},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_12_3_a11/}
}