(3GdGSdMI GdcjejGFjI hGdLQKhejI (B: s (3OQGSI aj GfhGYgG hJGKjQgG hWQb GdhbGjI efgG (B/ s - (3eMehO, eYjf GMeO, s ((3HjQhJ, dHfGf (B: s (3OGQ GdYde ddedGjjf (B982.s, 1982)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B291-293.s
Keywords: (3GdGSdMI GdcjejGFjI(B.s; (3GdGSdMI GdHjhdhLjI(B.s; (3GSdMI GdOeGQ GdTGed(B.s