並前往http://www.math.ntu.edu.tw/~dragon/General%20articles/%E7%8E%8B%E9%87%91%E9%BE%8D%E6%95%99%E6%8E%88%E8%A8%AA%E8%AB%87%E7%A8%BF-%E9%AB%98%E5%BE%AE%E5%84%AA.pdf