TY  - JOUR
AU  - Dragnev, Dragomir
TI  - On the Isoenergetical Non-Degeneracy of the Problem of two Centers of Gravitation
JO  - Serdica Mathematical Journal
PY  - 1997
SP  - 125
EP  - 130
VL  - 23
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SMJ2_1997_23_2_a3/
LA  - en
ID  - SMJ2_1997_23_2_a3
ER  -