https://archive.is/9zB1Q#selection-363.0-365.1（https://archive.is/https://sites.google.com/site/20120430prfphd/home/-dong-bei-da-xue-ji-guanripojitori/2000-03-23-2015-03-23/phd01-18-28-31-27-jiu-ji-ban/xu-bian/papers-on-si-in-english/in-japanese/academic-achivement/2015-05-19/2015-05-20/-matome）