(3eUGOQ GdecJHI GdYQHjI aj GddZI h GdCOH h GdeYGLe h GdJQGLe (B/ s - (3GdYeO, gGfjs ((3YeGf (B:s (3eDSSI GdHdSe ddfTQ h GdJhRjY,s, 1997)
Keywords: (3GdehGO GdeQLYjIs; (3ESJNOGe GdeQGLYs