(3GdegGQGJ aj JYde GdLZQGajI (B/ s - (3TcQ Gddg, YHO GdQVG YHO Gddg MGLj, s ((3GdchjJ (B: s (3GdfGTQ hcGdI GdeWHhYGJ (B980.s, 1980)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B275-286.s
Keywords: (3GdLZQGajGs -- (3OQGSI hJYdje(B.s; (3GdLZQGajGs -- (3HMK(B.s