TY  - JOUR
AU  - Kupin, Stanislav
TI  - On sum rules of special form for Jacobi matrices
JO  - Comptes Rendus. Mathématique
PY  - 2003
SP  - 611
EP  - 614
VL  - 336
IS  - 7
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/S1631-073X(03)00132-8/
DO  - 10.1016/S1631-073X(03)00132-8
LA  - en
ID  - CRMATH_2003__336_7_611_0
ER  -