TY  - JOUR
AU  - T. G. Mustafin
TI  - Toward a description of monoids over which all polygons have

JO  - Algebra i logika
PY  - 1990
SP  - 675
EP  - 695
VL  - 29
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1990_29_6_a4/
LA  - ru
ID  - AL_1990_29_6_a4
ER  -