TY - JOUR AU - V. N. Pervushin TI - Method of functional integration and an~eikonal approximation for potential scattering amplitudes JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1970 SP - 22 EP - 32 VL - 4 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1970_4_1_a4/ LA - ru ID - TMF_1970_4_1_a4 ER -