TY  - JOUR
AU  - S. V. Solov'ev
TI  - A~growth of length of $\mathrm L$-derivationtrans formed into natural deduction
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1979
SP  - 192
EP  - 196
VL  - 88
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1979_88_a14/
LA  - ru
ID  - ZNSL_1979_88_a14
ER  -