(3GdYdGbGJ GdYGeI hGdEYdGe aj GdOhd GdfGejI (B/s - (3MSf, eMjj eMehOs; (3efUhQ, SejQ MSfs ((3GdEScfOQjI, eUQ (B:s (3GdecJH GdLGeYj GdMOjK,s, 1985)
(3HHdjhLQGajI (B: (3U(B. 241-243.s
Keywords: (3GdYdGbGJ GdYGeIs -- (3GdOhd GdfGejIs; (3GdEYdGes -- (3GdOhd GdfGejIs