CiNii Articles - CiNii Articles Incorporated Databases

Incorporated Databases

CiNii Articles incorporates the following databases, enabling users to search for articles and authors from a large volume of data. The work of unifying different databases is ongoing, steadily making CiNii easier to use.

As of 31 March 2019, the number of articles which can be searched is about 21.5 million. (Exclude citation information)

(Providing Institution)
Code Content Coverage
Citation Database for Japanese Publications
(National Institute of Informatics)
CJP ref
*See NOTE 1

◎Incorporated References (If available)

This database is designed to show the relationship between academic papers and the papers they reference, covering papers of Japanese academic society journals in the field of natural sciences.

Incorporating period is from 1992 (It depends on the journals)

Bibliography: Approx. 2.1 million items
References: Approx. 24 million items
(Japan Science and Technology Agency)

◎Full text documents

This database offers e-journals of Japanese academic societies.

Approx. 4.88 million items
Institutional Repository
(Universities, etc.)

◎Full text documents
◎Partial abstracts

Institutional Repository is an archive system by research institutions, such as universities, in order to collect, accumulate and disclose their products for free.

The National Institute of Informatics also offers an integrated search service of domestic institutional repositories, IRDB. If there are articles on institutional repositories, it can be searched with CiNii articles.

Approx. 1.6 million items
NDLJPI Japanese Periodicals Index
(National Diet Library)

◎Bibliographic information only

In collecting domestic publications by the National Diet Library, mainly academic journals, university bulletins and specialized journals, this is the largest domestic periodicals's index incorporating data every field such as Humanities/Social Sciences, Sciences/Technologies, and Medical Sciences/ Pharmaceutical Sciences.

Approx. 13.13 million items
List of incorporated journals(National Diet Libray website)
Japanese Agricultural Sciences Index
(Tsukuba Office, Agriculture, Forestry and Fisheries Research Council Secretariat)

◎Partial text documents

This is a digitized database that started in 1970. JASI incorporates journal information of articles published in approximately 500 domestic forestry and fisheries-related academic journals. Some articles have links to external.

Approx. 0.14 million items
Ichushi Web
(Japan Medical Abstracts Society)

◎Partial text documents
◎Partial Abstracts

Ichushi Web offers search service for domestic medical article information published by NPO Japan Medical Abstracts Society. It incorporates approximately 7.5 million those article information from roughly 5,000 domestic journals of related fields of medicine, dentistry, pharmaceutical science and nursing. Only incorporated data from other databases, links to the article information of Ichushi Web are displayed by using a data provided by Japan Medical Abstracts Society.


◎Full text documents

CrossRef offers a service of unified management of links to online journals operated by a non-profit organization co-founded by scholarly publishers. Links to articles are provided by publishers. Only incorporated data from other databases, links to the article information of CrossRef are displayed by using a data provided by CrossRef. In order to be displayed them, qualification of usage is needed.

Nikkei BP Magazine Archive
(Nikkei BP)
Nikkei BP

◎Full text documents

Search service for journals published by Nikkei BP. Only incorporated data from other databases, links to the full-text documents and abstracts are displayed by using a data provided by Nikkei BP.

IPS Digital Library
(Information Processing Society of Japan)

◎Full text documents ◎Abstracts

IPS Digital Library offers search and browse service for articles and research reports published by Information Processing Society of Japan.

※There are some paid contents.

Approx. 0.15 million items
JSAI Archives
(The Japanese Society for Artificial Intelligence)

◎Full text documents ◎Abstracts

JSAI Archives offers search and browse service for articles and research reports published by The Japanese Society for Artificial Intelligence.

※There are some paid contents.

Approx. 8 thousand items

As of 31 March, 2019

*Note1: About references in the Citation Database for Japanese Papers (CJP ref)

CiNii Articles counts each referenced datum from the Citation Database for Japanese Papers as a single record.
In most cases, when the "Databases: " field has only "CJP ref", only simplified information (e.g. bibliography in a references list) is available.
Please note that entries are presented as they originally appeared, and NII cannot correct any errors in the data.