(3GdeYGdL GdObjb (B8285 (3hHjfjJg h GSJNOGeg aj GdJMce (B/ s - (3GdbGVj, RjGO YHO GdcQjes ((3YeGf (B:s (3OGQ UaGA,s, 1997)
Keywords: (3GdMhGSjHs; (3HQGeL GdMGShHs; (3dZGJ GdHQeLIs