(3GdfXQjI GdYGeI ddeLQe h GdLRGA (B:s (3GdScGQi h GdeLGfjf h GdUZGQ (B- (3GdNWhQI GdGLQGejI (B- (3adSaI GdYbGH (B-(3GdYbhHGJ GdCUdjI h GdaQYjI (B- (3EfbVGAGdYbhHI (B/s - (3QeSjS HgfGe s ((3GdGScfOQjI (B:s (3OGQ efTCI GdeYGQa ,s, 1991)
(3jTed Ydj GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFjs