Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1978_243_4_a7, author = {G. S. Makanin}, title = {Recognizing the rank of coefficientless equations in a free semigroup}, journal = {Doklady Akademii Nauk}, pages = {851--854}, publisher = {mathdoc}, volume = {243}, number = {4}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_4_a7/} }
G. S. Makanin. Recognizing the rank of coefficientless equations in a free semigroup. Doklady Akademii Nauk, Tome 243 (1978) no. 4, pp. 851-854. http://geodesic.mathdoc.fr/item/DAN_1978_243_4_a7/