TY  - JOUR
AU  - K. F. Chernykh
TI  - On the necessity of taking geometric nonlinearity into account in
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 1336
EP  - 1338
VL  - 306
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_306_6_a12/
LA  - ru
ID  - DAN_1989_306_6_a12
ER  -