Citebase Search is an experimental, semi-autonomous citation index

Citation index

A citation index is a kind of bibliographic database, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. The first citation indices were legal citators such as Shepard's Citations...

 for the free, online research literature created by Tim Brody at the University of Southampton

University of Southampton

The University of Southampton is a British public university located in the city of Southampton, England, a member of the Russell Group. The origins of the university can be dated back to the founding of the Hartley Institution in 1862 by Henry Robertson Hartley. In 1902, the Institution developed...

, UK. It harvests open access e-prints (most author self-archived) from OAI-PMH compliant archives, parses and links their references and indexes the metadata in a Xapian

Xapian

Xapian is an open source probabilistic information retrieval library, released under the GNU General Public License . It is a full text search engine library for programmers....

-based search engine

Search engine

A search engine is an information retrieval system designed to help find information stored on a computer system. The search results are usually presented in a list and are commonly called hits. Search engines help to minimize the time required to find information and the amount of information...

. Citebase went live in 2005.

More than three-quarters of the papers indexed are author self-archived in the ArXiv

ArXiv

The arXiv |Chi]], χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance which can be accessed online. In many fields of mathematics and physics, almost all...

 archive, which includes physics

Physics

Physics is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.Physics is one of the oldest academic...

, maths and computer science

Computer science

Computer science or computing science is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems...

. Some (published) biomedical papers are indexed from BioMed Central

BioMed Central

BioMed Central is a UK-based, for-profit scientific publisher specialising in open access journal publication. BMC, and its sister companies Chemistry Central and PhysMath Central, publish over 200 scientific journals. Most BMC journals are now published only online. BMC describes itself as the...

 and PubMed Central

PubMed Central

PubMed Central is a free digital database of full-text scientific literature in biomedical and life sciences. It grew from the online Entrez PubMed biomedical literature search system. PubMed Central was developed by the U.S. National Library of Medicine as an online archive of biomedical journal...

.

A service displaying exclusively ArXiv

ArXiv

The arXiv |Chi]], χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance which can be accessed online. In many fields of mathematics and physics, almost all...

 internal citations is XStructure.

See also

• Eprints
  EPrints
  EPrints is a free and open source software package for building open access repositories that are compliant with the Open Archives Initiative Protocol for Metadata Harvesting. It shares many of the features commonly seen in Document Management systems, but is primarily used for institutional...
  
  
• Citeseer
  CiteSeer
  CiteSeer was a public search engine and digital library for scientific and academic papers. It is often considered to be the first automated citation indexing system and was considered a predecessor of academic search tools such as Google Scholar and Microsoft Academic Search. It was replaced by...
  
  
• NASA ADS
• Stanford Physics Information Retrieval System
  Stanford Physics Information Retrieval System
  The Stanford Physics Information Retrieval System was originally developed at the Stanford Linear Accelerator Center in 1969, from a design based on a 1967 information study of physicists at SLAC. The system was designed as a physics database management system to deal with high-energy-physics...