1.

IEEE Xplore

Mathematics, Applied Physics Communication, Communication Engineering, Computer Science Energy, Engineering, Medicine Physics, Statistics, Telecommunication

https://ieeexplore.ieee

2.

JSTOR

Arts and Humanities, Business Economics, Education English Language and Literature Language and Literature Library and Information Science Law, Medicine, Social Science Statistics

https://www.jstor.org/

3.

3500 Wiley Online Books via Wiley Online Library

Engineering, Humanities & Social Sciences, Law, Life Science, Management, Medical, Science,

http://www.wileyindia.com