CiNii(Scholarly and Academic Information Navigator, pronounced like "sigh-knee") is a database service which can be searched with academic information of articles, Books & Journals. It is available free of charge for anyone. In viewing paid content, special rates and other privileges are offered to institutional fixed-price users (registration by institution) or users with an ID (individual registration). "CiNii Articles"enables you to search information on academic articles published in academic society journals, university research bulletins or articles included in the National Diet Library's Japanese Periodicals Index Database. "CiNii Books"enables you to search information of books and journals held by university libraries in Japan.