(3GdeSDhdjI GdeOfjI Yf GdGNWGA GdegfjI (B: s (3GdWHjH, GdegfOS GdeYeGQj hGdebGhd, GdeMGej (B/ s - (3GdMSjfj, YHO GddWja, s; (3GdfbjH, YGWa, s ((3HjQhJ, dHfGf (B: s (3GdTQcI GdYGdejI ddcJGH (B987.s, 1987)
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3UaMI (B412-415.s
Keywords: (3GdeSFhdjI GdeOfjI(B.s; (3GdNWC (B((3bGfhf(B).s; (3GdeSFhdjI GdeOfjIs -- (3aQfSG(B.s; (3GdeSFhdjI GdeOfjIs -- (3dHfGf(B.s