Survey on density of states and saturation effect of spectrum for an energy-dependent harmonic interactionAbdelmalek Boumali، Samia Dilmi، Soroush Zare، HASSAN HASSANABADIKarbala International Journal of Modern Scienceالمجلّد 3، (4)، الصفحات 191-2012017مقال وصول مفتوح 7