Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1966_5_5_a1, author = {Yu. Sh. Gurevich}, title = {The problem of equality of words for certain classes of}, journal = {Algebra i logika}, pages = {25--35}, publisher = {mathdoc}, volume = {5}, number = {5}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1966_5_5_a1/} }
Yu. Sh. Gurevich. The problem of equality of words for certain classes of. Algebra i logika, Tome 5 (1966) no. 5, pp. 25-35. http://geodesic.mathdoc.fr/item/AL_1966_5_5_a1/