(3eYLe GdeUWdMGJ GdWHjI(B: 2(3L (B/ s - (3eLeY GddZI GdYQHjIs ([S.N] : (3eLeY GddZI GdYQHjI , s, 1990)
Keywords: (3GdWHs; (3GdeYGLes; (3GdeQGLY GdeJNUUIs