TY  - JOUR
AU  - Vougalter, Vitali
TI  - On the Negative Index Theorem for the Linearized Non-Linear Schrödinger Problem
JO  - Canadian mathematical bulletin
PY  - 2010
SP  - 737
EP  - 745
VL  - 53
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2010-062-4/
DO  - 10.4153/CMB-2010-062-4
ID  - 10_4153_CMB_2010_062_4
ER  -