@article{IM2_1979_13_3_a5,
     author = {E. V. Kashincev},
     title = {On the word problem for special semigroups},
     journal = {Izvestiya. Mathematics },
     pages = {663--676},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1979_13_3_a5/}
}