關於「DOI paper free」標籤，搜尋引擎有相關的訊息討論：

A GL Model on Thermo-Elastic Interaction in a Poroelastic Material ...。

Author to whom correspondence should be addressed. Symmetry 2020, 12(3), 488; https://doi.org/10.3390/sym12030488. Received: 7 March 2020 / ...。

Article Downloads, Twitter Mentions, and Citations - PLOS。

2012年11月1日 · Temporal distribution plots of (c) total arXiv downloads (weekly), and (d) total Twitter mentions of arXiv papers in our cohort. https://doi.org ...： 。

COVID-19 and the 5G Conspiracy Theory: Social Network Analysis ...。

2020年5月6日 · Methods: This paper performs a social network analysis and content analysis of Twitter data from a 7-day period (Friday, March 27, 2020, ...： 。

Google Scholar。

Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, ...： DOI | DOI。

Yogurt Is a Low–Glycemic Index Food | The Journal of Nutrition。

Although several mechanisms could explain this association, this paper. ... There is evidence that low–glycemic index (GI) and low–glycemic load (GL) diets ...。

Global Environmental Change - Journal - Elsevier。

Global Environmental Change is a peer-reviewed international journal publishing high quality, theoretically and empirically rigorous articles, which advance ...： DOI 。

Political attitudes and demographics of British social media users。

2017年7月13日 · Filho, RM, Almeida, JM, Pappa, GL (2015) Twitter population sample bias and its impact on predictive outcomes. In: Proceedings of the 2015 IEEE/ ...。

Relevance of the Glycemic Index and Glycemic Load for Body ...。

Descriptions of the studies were kept consistent with the parameter assessed (GI or GL). Of the 445 articles retrieved from the keyword search, 278 were not ...： tw | tw。

The spread of low-credibility content by social bots - Nature。

2018年11月20日 · We further collected from Twitter all of the public posts linking to these articles: 13,617,425 tweets linked to low-credibility sources and ...。

The role of Twitter in the life cycle of a scientific publication - PeerJ。

2013年5月7日 · Twitter is a micro-blogging social media platform for short messages ... field the availability of the paper here (with doi + citation).：