TY  - JOUR
AU  - V. P. Orevkov
TI  - Lower bounds for lengthening of proofs after cut-elimination
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1979
SP  - 137
EP  - 162
VL  - 88
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1979_88_a10/
LA  - ru
ID  - ZNSL_1979_88_a10
ER  -