TY  - JOUR
AU  - I. G. Fikhtengol'ts
TI  - Characteristic vectors and characteristic tensors for spherically
JO  - Doklady Akademii Nauk
PY  - 1995
SP  - 756
EP  - 759
VL  - 344
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1995_344_6_a7/
LA  - ru
ID  - DAN_1995_344_6_a7
ER  -