(3eQLY GdOaGY GdeOfj aj GdUfGYI (B/s - (3UOjb, eMeO Mdej(B.s ((3GdQjGV (B:s (3GdeQcR GdYQHj ddOQGSGJ GdCefjI hGdJOQjH, OGQ GdfTQ,s, 1991)
(3HHdjhLQGajI (B: (3L(B. 2(3, U(B. 196-197.s
Keywords: (3GdCef GdUfGYjs; (3GdOaGY GdeOfjs