TY  - JOUR
AU  - Z. A. Steingrad
TI  - Harmonic frames of reference in Einstein's theory of gravity
JO  - Doklady Akademii Nauk
PY  - 1972
SP  - 831
EP  - 833
VL  - 204
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1972_204_4_a17/
LA  - ru
ID  - DAN_1972_204_4_a17
ER  -