TY - JOUR AU - V. A. Ivanov AU - V. D. Chugunov TI - Application of a qualitative theory of functional equations to the study of inhomogeneous petroleum beds and the determination of pressures and outputs of wells JO - Doklady Akademii Nauk PY - 1975 SP - 52 EP - 55 VL - 221 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_221_1_a12/ LA - ru ID - DAN_1975_221_1_a12 ER -