@article{AL_1963_2_4_a4,
     author = {A. V. Kuznetsov},
     title = {Undecidability of the general problems of completeness,},
     journal = {Algebra i logika},
     pages = {47--66},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1963_2_4_a4/}
}