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A DOI is a type of Handle System handle, which takes the form of a character string divided into two parts, a prefix and a suffix, separated by a slash.. prefix/suffix. The prefix identifies the registrant of the identifier and the suffix is chosen by the registrant and identifies the specific object associated with that DOI.
Zenodo is a general-purpose open repository developed under the European OpenAIRE program and operated by CERN. [1] [2] [3] It allows researchers to deposit research papers, data sets, research software, reports, and any other research related digital artefacts.
A digital object identifier (DOI) is a unique persistent identifier to a published work, similar in concept to an ISBN. Wikipedia supports the use of DOI to link to published content. Where a journal source has a DOI, it is good practice to use it, in the same way as it is good practice to use ISBN references for book sources.
Research papers from more than 55 disciplines Free & Subscription No Elsevier: HAL: Multidisciplinary: 760,000 (2,000,000 metadata) [14] An open-access database for French researchers. Organized into institution and domain portals. Free Yes CNRS's Centre pour la Communication Scientifique Directe (CCSD) RePEc: Research Papers in Economics [15 ...
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 ...
arch-ive/YYMMNNN for older papers, e.g. hep-th/9901001. Different versions of the same paper are specified by a version number at the end. For example, 1709.08980v1. If no version number is specified, the default is the latest version. arXiv uses a category system. Each paper is tagged with one or more categories. Some categories have two layers.
PubMed is a free database including primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.
Related documents were shown using citation and word based measures, and an active and continuously updated bibliography is shown for each document. CiteSeer was granted a United States patent # 6289342, titled "Autonomous citation indexing and literature browsing using citation context", on September 11, 2001. The patent was filed on May 20 ...