(3Gdaf GdSjfeGFi hUQGY GdGacGQ (B/ s - (3cGQGZGfha, G(B. (3fs; (3eeOhM GHhGdhis ((3ShQjG (B: s (3OGQ OeTb ddfTQ hGdJhRjY hGdWHGYI , s, 1986)
Keywords: (3GdOQGeGs; (3GdSjfeGs