@article{AL_1965_4_2_a1,
     author = {A. P. Biryukov},
     title = {On infinite aggregates of identities in semi-groups},
     journal = {Algebra i logika},
     pages = {31--32},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1965_4_2_a1/}
}