(3CZQH GdbHGFd h GdTYhH HGdbQf GdYTQjf (B/ s - (3GdYHO Gddg, QjGV eUWais ((3OeTb (B:s (3OGQ GdcJGH GdYQHj,s, 1986)
Keywords: (3YLGFH h ZQGFHs