(3edNUGJ QSGFd GdeGLSJjQ (B/ s - (3GdLGeYI GdCQOfjI (B- (3cdjI GdOQGSGJ GdYdjGs ((3YeGf (B:s (3GdLGeYI GdCQOfjI,s, 1991)
Keywords: (3GdOQLGJs; (3GdCcGOjejIs; (3GdHHdjhZQGajGs; (3QSGFd GdeGLSJjQs