@article{AL_1985_24_2_a2,
     author = {A. M. Nurakunov},
     title = {Quasi-identities of absolutely free algebras},
     journal = {Algebra i logika},
     pages = {181--194},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1985_24_2_a2/}
}