TY  - JOUR
AU  - G. S. Makanin
TI  - Recognition of the rank of equations in a~free semigroup
JO  - Izvestiya. Mathematics 
PY  - 1980
SP  - 499
EP  - 545
VL  - 14
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1980_14_3_a1/
LA  - en
ID  - IM2_1980_14_3_a1
ER  -