TY  - JOUR
AU  - V. N. Sorokin
TI  - A transcendence measure for $\pi^2$
JO  - Sbornik. Mathematics
PY  - 1996
SP  - 1819
EP  - 1852
VL  - 187
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1996_187_12_a3/
LA  - en
ID  - SM_1996_187_12_a3
ER  -