- https://scholar.google.com/
- https://www.scopus.com/search/form.uri?display=basic
- https://orcid.org/
- https://www.researchgate.net/
- https://www.semanticscholar.org/
- https://www.linkedin.com/
- https://www.mendeley.com/
- www.icograda.com
- http://adsoftheworld.com/
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- http://www.splashnology.com/