(3ecGaGI GdeSGYOI hGdGfbGP habG deTQhY GdbGfhf GdHMQj GdYQGbj (B: s (3OQGSI ebGQfI eY GdJTQjYGJ GdHMQjI GdGLfHjI hGdGJaGbjGJ GdHMQjI GdOhdjI (B/ s - (3GdfYeI, YHO GdHGbj YfHQ, s ((3HZOGO (B[(3GdYQGb(B] : s (3eWHYI GdGfOdS (B976.s, 1976)
(3GUd GdcJGH QSGdI LGeYjI (B((3eGLSJjQ(B) - (3LGeYI HZOGO(B.s
(3SGYOJ LGeYI HZOGO Ydi fTQg(B.s
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3GdUaMI (B433-441.s
Keywords: (3GdbGfhf GdHMQjs -- (3GdYQGbs; (3GdGfbGP(B.s