(3ePcQGJ eCehf Hc Hf Hjcg Hc (B/s - (3GdQhRHjGfj ,eMeO Lejd s ((3HZOGO(B:s (3eWHYI GdeLeY GdYdej GdYQGbj ,s, 1980)
Keywords: (3eCehf Hc Hf Hjcg Hc s