ISI has three indexes: scientific citation index-SCI, scientific conference-ISTP and scientific review index-ISR.

Engineering index -EI

Scientific Abstracts -SA: Including Physical Abstracts -PA, Electrical and Electronic Abstracts-EEA, Computer and Control Abstracts-CCA, Information Technology -IT. (mainly check the database)

Others, such as the doctoral thesis database (PQDD).

Domestic data and catalogue databases funded by Wanfang and CALIS.

Of course, it's all about money.

PS: Google Academic is a good thing. ...