Open access (OA) is a publishing and distribution model that makes scholarly research literature—much of which is funded by taxpayers around the world—freely available to the public online, without restrictions (http://opendefinition.org). (See videos Open Access Policies: An Introduction from COAPI and Sherpa Authors and Open Access)
Gross, Stephanie L. with Michael Bettencourt. (2019, October 10), Open Access Initiatives, YU News, Office of Marketing & Communications. Yeshiva University, https://blogs.yu.edu/news/open-access-initiatives/ .
*This is contructed from limited avaiable data and may be imprecise.