(3GHh GdbGSe GdTGHi(B: (3TGYQ GdMH hGdKhQI (B/ s - (3QLGA GdfbGTs ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1988)
Keywords: (3GdTYQ GdYQHis; (3GdTYQGA (B- (3JQGLes; (3GHh GdbGSe GdTGHis