(3GdJQcjH GdOGNdj deOjfI GdehUd GdbOjeI , OQGSI aj LZQGajI GdeOfs - (3GdLfGHj, gGTe NVjQs ((3GdehUds (3eOjQjI OGQ GdcJH ddWHGYI hGdfTQs, 1981)
Keywords: (3LZQGajI GdeOfs -- (3JQHjIs; (3LZQGajIs -- (3GdbQf GdYTQhfs