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They are not open-access and differ widely in cost: Web of Science and Scopus are available by subscription (generally to libraries). In addition, CiteSeer and Google Scholar are freely available online. Several open-access, subject-specific citation indexing services also exist, such as: INSPIRE-HEP which covers high energy physics,
The word indexing service is today mostly used for computer programs, but may also cover services providing back-of-the-book indexes, journal indexes, and related kinds of indexes. [2] An indexing and abstracting service is a service that provides shortening or summarizing of documents and assigning of descriptors for referencing documents. [3]
An Iranian index of academic journals and access to full text or metadata Free Scientific Information Database: SCIndeks - Serbian Citation Index: Multidisciplinary: 80,000 A bibliographic database, a national citation index, an Open Access full-text journal repository and an electronic publishing platform. Articles from >230 journals. Free
This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services. True open-access journals can be split into two categories:
Open J-Gate was a free database of open access journals, launched in February 2006, and hosted by Informatics Ltd. of India.. Informatics started metadata aggregation from open access journals as part of the development of J-Gate.
Indexes are constructed, separately, on three distinct levels: terms in a document such as a book; objects in a collection such as a library; and documents (such as books and articles) within a field of knowledge. Subject indexing is used in information retrieval especially to create bibliographic indexes to retrieve documents on a particular ...
[1] As a discovery platform for the research community, [2] it is presented as a website under subscription-based access to a large database of scientific research. [ 3 ] [ 4 ] It contains abstracts , citations , full-text access for all Open Access journals and other key details from academic journals by covering 71 million+ Indexed articles ...
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...