Fulltext PDF will be unable to be displayed from 8:00 to 8:10 [JST] on Monday, Dec. 28

Fulltext PDF will be unable to be displayed from 8:00 to 8:10 [JST] on Monday, Dec. 28 for system maintenance. Searching and displaying detail pages will be able to be done normally. But references and citing works will be unable to be displayed.
We apologize for any inconvenience it may cause you.