TY  - JOUR
AU  - L. A. Kalyakin
TI  - On the problem of first correction in soliton perturbation theory
JO  - Sbornik. Mathematics
PY  - 1995
SP  - 977
EP  - 1002
VL  - 186
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1995_186_7_a4/
LA  - en
ID  - SM_1995_186_7_a4
ER  -