ごめんなさい

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V9F-4H3Y9D0-2&_user=10&_handle=V-WA-A-W-AD-MsSWYWW-UUW-U-AACCAUEYBY-AACWZEUZBY-EYEDYAYUE-AD-U&_fmt=summary&_coverDate=12%2F31%2F2005&_rdoc=13&_orig=browse&_srch=%23toc%235897%23200…