(3GdbGfhf GdEOGQj (B:s (3GdQbGHI GdbVGFjI Ydi CYeGd GdEOGQI (B: (3GdbVGA GdEOGQj (B/s - (3WdHI, YHO Gddgs ((3OeTb (B:s (3LGeYI OeTb (B:s (3eWHYI OGQ GdcJGH,s, 1989)
(3HHdjhLQGajI (B: (3U(B. 430-432.s
Keywords: (3GdbVGA GdEOGQjs -- (3ShQjGs; (3GdbGfhf GdEOGQjs -- (3ShQjGs