TY  - JOUR
AU  - B. M. Shain
TI  - Semigroups of rectangular binary relations
JO  - Doklady Akademii Nauk
PY  - 1965
SP  - 1011
EP  - 1014
VL  - 165
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1965_165_5_a8/
LA  - ru
ID  - DAN_1965_165_5_a8
ER  -