%0 Journal Article %A V. I. Burenkov %A P. D. Lamberti %A M. Lanza de Cristoforis %T Spectral Stability of Nonnegative Self-Adjoint Operators %J Contemporary Mathematics. Fundamental Directions %D 2006 %P 76-111 %V 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2006_15_a6/ %G ru %F CMFD_2006_15_a6