сервисы

https://mgimo.ru/library/resources/

http://scholar.google.com

http://search.crossef.org

http://academia.edu

http://thefreelibrary.com

http://elibrary.ru

http://cyberleninka.ru

http://dissercat.com

http://scholar.ru

http://newscientist.com

http://degruyter.com

http://onlinelibrary.wiley.com

http://springer.com

http://global.oup.com/academic

http://www.oxfordhandbooks.com

https://global.oup.com/academic/content/series/v/very-short-introductions-vsi/?lang=en&cc=ca