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  2. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    Databases and search engines differ substantially in terms of coverage and retrieval qualities. [1] Users need to account for qualities and limitations of databases and search engines, especially those searching systematically for records such as in systematic reviews or meta-analyses. [2]

  3. Comparison of search engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_search_engines

    The first table lists the company behind the engine, volume and ad support and identifies the nature of the software being used as free software or proprietary software. The second and third table lists internet privacy aspects along with other technical parameters, such as whether the engine provides personalization (alternatively viewed as a ...

  4. Google Scholar - Wikipedia

    en.wikipedia.org/wiki/Google_Scholar

    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 ...

  5. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02 [9]. LGPL v2 [10] Terrier Search Engine: Linux, Mac OS X, Unix: Desktop search for Windows, Mac OS X (Tiger), Unix/Linux. MPL v1.1 [11] Tracker: Linux, Unix: Open-source desktop search tool for Unix/Linux GPL v2 [12] Tropes Zoom: Windows: Semantic Search Engine (no ...

  6. List of online encyclopedias - Wikipedia

    en.wikipedia.org/wiki/List_of_online_encyclopedias

    Collaborative online encyclopedia hosted by the major Chinese search engine company Sogou: Active Free Unknown None None Superpedia: Indonesian, Sundanese, Javanese: General interest Active Free Unknown None None Susning.nu (2001–09) Swedish: A Swedish language wiki Defunct None Unknown None None Tamil Encyclopedia: Tamil: General Interest ...

  7. Wikipedia : Identifying reliable sources (science)

    en.wikipedia.org/wiki/Wikipedia:Identifying...

    This page in a nutshell: Cite reviews, don't write them. Appropriate sources for discussing the natural sciences include comprehensive reviews in independent, reliable published sources, such as recent peer reviewed articles in reputable scientific journals, statements and reports from reputable expert bodies, widely recognized standard textbooks written by experts in a field, or standard ...