TY  - JOUR
AU  - V. S. Pekar
TI  - Perturbation theory for one-dimensional Schrodinger equations that can be used in a~region where the wave function is small
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1971
SP  - 440
EP  - 444
VL  - 9
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1971_9_3_a13/
LA  - ru
ID  - TMF_1971_9_3_a13
ER  -