(3GdGZQGH ai GdGYQGH (B/ s - (3fGUQ MSjf Ydi (B((3JMbjb(B)s; (3GdOQhci (B, (3eMeO Hf eUWai GdMfais ([S.N] : (3GdeWHYI GdJYGhfjI , s, 1989)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs