@article{AL_2014_53_2_a6,
     author = {A. G. Pinus},
     title = {Definable functions of universal algebras and definable equivalence between algebras},
     journal = {Algebra i logika},
     pages = {256--270},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2014_53_2_a6/}
}