TY  - JOUR
AU  - V. P. Orevkov
TI  - On non-lengthening applications of equality rules
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1969
SP  - 152
EP  - 156
VL  - 16
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1969_16_a16/
LA  - ru
ID  - ZNSL_1969_16_a16
ER  -