TY  - JOUR
TI  - An asymptotic formula for the sum of the negative eigenvalues of second order differential operator given in infinite interval
AU  - BAKŞİ, Ã.
AU  - Ä°SMAYÄ°LOV, S.
JO  - Sigma Journal of Engineering and Natural Sciences
PY  - 2005
VL  - 23
SP  - 87
EP  - 98
DO  - 
ER  -