TY  - JOUR
AU  - I. N. Ponomarenko
TI  - On computation complexity problems concerning relation algebras
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1992
SP  - 116
EP  - 134
VL  - 202
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1992_202_a6/
LA  - ru
ID  - ZNSL_1992_202_a6
ER  -