شكراااااااااااااااااااااااااااااا اريد تحميل هذا المقال https://ieeexplore.ieee.org/xpl/login...umber%3D614783 https://ieeexplore.ieee.org/xpl/login...umber%3D896994 https://ieeexplore.ieee.org/xpl/login...umber%3D955532 https://dl.acm.org/citation.cfm?id=1384883.1512621