(3CSGdjH GQJcGH GdLQGFe hWQb GdHMK ajgG (B/s - (3CHh GdQhS, CMeO HSjhfjs ((3GdEScfOQjI, eUQ (B:s (3OGQ GdeWHhYGJ GdLGeYjI,s, 1990)
Keywords: (3Yde GdELQGes; (3GdHMK GdLfGFjs; (3GdLQjeI hGdeLQehfs