(3GdYTQGJ aj GddZI (B: s (3SdSdI CSaGQ GdYQHjI (B(2) / s ((3GdGeGQGJ (B: s (3GdeWHYI GdhWfjI , s, 1984)
Keywords: (3GddZI GdYQHjI; abg GddZI; GdOQGSGJ GddZhjIs