TY  - JOUR
AU  - S. I. Vetchinkin
TI  - A method of determining optimal wave functions for an approximate calculation of matrix elements
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 1328
EP  - 1331
VL  - 147
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_147_6_a17/
LA  - ru
ID  - DAN_1962_147_6_a17
ER  -