@article{IVM_2009_4_a5,
     author = {V. L. Usol'tsev},
     title = {Free algebras of a~unary variety with {Mal'tsev's} operation that satisfies the {Pixley} conditions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {43--49},
     publisher = {mathdoc},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_4_a5/}
}