TY  - JOUR
AU  - A. M. Evseev
TI  - Ground energy level of helium, as calculated using integrals over trajectories
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 1197
EP  - 1199
VL  - 189
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_189_6_a8/
LA  - ru
ID  - DAN_1969_189_6_a8
ER  -