(3GdfbO GdJWHjbj GdJMdjdj (B: s (3ebOeI dOQGSI GdGOH hYfGUQg aj VhA GdefGgL GdfbOjI GdMOjKI (B/ s - (3YHO Gddg, YOfGf NGdO, s ((3HZOGO (B[(3GdYQGb(B] : s (3OGQ GdTDhf GdKbGajI GdYGeI (B986.s, 1986)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B182-188.s
Keywords: (3GdGOHs -- (3JGQjN hfbOs -- (3GdbQf (B20.s