網址: https://www.researchgate.net/publication/351868839/figure/download/fig6/AS:1027626378485763@1622016629936/Normal-slice-with-complex-link-ball-and-d-disk-253-The-braid-diagram-All-these-facts.png
網址2: https://www.researchgate.net/figure/Normal-slice-with-complex-link-ball-and-d-disk-253-The-braid-diagram-All-these-facts_fig6_351868839
