(3GdegGLQ GdeUQi (B: (3OQGSI ShSjh GfKQHhdhLjI (B/ s - (3YHOGddg YHOGdZfi ZGfes ([S.N] : (3GdecJH GdLGeYi GdMOjK , s, 1990)
Keywords: (3GdgLQIs; (3GdGfKQHhdhLjGs; (3GdegGLQhfs; (3GdgLQI GdfGRMIs