By using the bibliographic data of CiNii, Ichushi-Web and CrossRef (international electronic journals’ reference database) including URLs, the system automatically generates the links to the items in the publication lists. For the identification of the items, it uses i-Linkage system developed by Prof. Akiko Aizawa at the National Institute of Informatics. As of 1st April 2012, there are 4,858,603 items in the publication lists, of which 1,765,116 items are linked to external sites. This is done within an accuracy of 97.5 % (by sampling test).