TY  - JOUR
AU  - G. S. Makanin
TI  - Decidability of the universal and positive theories of a~free group
JO  - Izvestiya. Mathematics 
PY  - 1985
SP  - 75
EP  - 88
VL  - 25
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1985_25_1_a4/
LA  - en
ID  - IM2_1985_25_1_a4
ER  -