(3fbO GdTYQ aj GdefXhQ GdfaSj (B/ s - (3GHQGgje, QjcGf, s 1952- ((3HZOGO, GdYQGb (B: s (3hRGQI GdKbGaI hGdGYdGe, OGQ GdTDhf GdKbGajI GdYGeI, (B(((3BaGb YQHjI(B))(3 (B989.s, 1989)
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3UaMI (B255-261.s
Keywords: (3GdTYQ GdYQHjs -- (3JGQjN hfbO(B.s