TY  - JOUR
AU  - V. K. Ionin
TI  - Structures that can be generated by sets of morphisms
JO  - Matematičeskie trudy
PY  - 1987
SP  - 66
EP  - 84
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MT_1987_9_a6/
LA  - ru
ID  - MT_1987_9_a6
ER  -