(3MbjbI GdeGShfjI GdYGdejI(B.s (3GdLRA GdGhd (B/ s - (3YHOGddg Ydi Secs ((3GdbGgQI (B: s (3GdeDSSI GdYQHjI GdMOjKI , s, 1988)
Keywords: (3GdGSdGes; (3GdeGShfjIs