(3EMjGA GdJQHI GdeLgQjI (B/ s - (3GdQGTOj, QGVj cGXes ((3GdHUQI (B:s (3hRGQI GdJYdje GdYGdj (B- (3LGeYI GdHUQI,s, 1987)
Keywords: (3GdJQHIs; (3GdCQGVjs