搜索结果

{{Short description|Online biomedical database}} '''PubMed''' is a free [[List of academic databases and search engines|search engine]] accessing primarily the [[MEDLINE]] [[bi

…=978-1-935958-02-4 }}</ref> Content within PMC can be linked to other NCBI databases and accessed via [[Entrez]] search and retrieval systems, further enhancing …ations and abstracts, the full-text article resides elsewhere (in print or online, free or behind a subscriber [[paywall]]).

{{Short description|Online archive of e-preprints}} |current_status = Online

…<ref>{{cite web |url=https://journal-index.org/index.php/issnChecker|title=Online ISSN Validator |publisher=Advanced Science Index |access-date=16 Sep 2023… …of the first published medium version of the publication. If the print and online versions of the publication are published at the same time, the ISSN of the

….com/connect/ssrn-the-leading-social-science-and-humanities-repository-and-online-community-joins-elsevier |work=Elsevier Connect |publisher=Elsevier |access …|trans-title=SSRN—the leading social science and humanities repository and online community—joins Elsevier|author= Gregg Gordon|date =May 17, 2016}}</ref>

…language=en |quote=Assuming the publishers do their job of maintaining the databases, these centralized references, unlike current web links, should never becom …f an [[HTTP proxy]] server which will redirect web accesses to the correct online location of the linked item.<ref name="dd"/><ref>{{Cite journal|first=Andy|