فهرس المقالات Akbar Jafari Shaerlar المقاله 1 - Direct method for solving nonlinear two-dimensional Volterra-Fredholm integro-differential equations by block-pulse functions Elnaz Poorfattah Akbar Jafari Shaerlar International Journal of Information, Security and Systems Management , العدد 1 , السنة 4 , زمستان 2015
