(3GdehShYI GdLfGFjI aj GdbVGA GdLfGFj GdYQGbj(B. s (3GdLRA GdGhd, s (3NGU HGdJMbjb GdLfGFj GdYedj hGdGLQGAGJ GdbGfhfjI GdeJYdbI HeeGQSJg hJWHjbg eOYeG HGMOK GdbQGQGJ GdLfGFjI deMceI JejjR GdYQGb hGdUGOQI HgPG GdNUhU (B/ s - (3GdSeGc, Ydj, s ((3HZOGO (B[(3GdYQGb(B] : s (3eWHYI GdLGMX (B990.s, 1990)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFjs -- (3GdYQGb(B.s; (3GdbVGAs -- (3GdYQGb(B.s