@article{AL_1972_11_1_a0,
     author = {A. I. Abakumov and E. A. Palyutin and M. A. Taitslin and Yu. E. Shishmarev},
     title = {Categorial quasivarieties},
     journal = {Algebra i logika},
     pages = {3--38},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1972_11_1_a0/}
}