TY  - JOUR
AU  - V. I. Astaf'ev
AU  - P. V. Roters
TI  - Modeling of doubly periodic system of producing wells. 2.~Productivity index
JO  - Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ
PY  - 2011
SP  - 118
EP  - 127
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VSGU_2011_8_a12/
LA  - ru
ID  - VSGU_2011_8_a12
ER  -