@article{INTA_1987_25_a0,
     author = {L. A. Bokut' and G. P. Kykin},
     title = {Undecidable algorithmic problems for semigroups, groups and rings},
     journal = {Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya },
     pages = {3--66},
     publisher = {mathdoc},
     volume = {25},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTA_1987_25_a0/}
}