Ayurvedic Research databases

I recently was searching online for the source verses of dhi, dhriti and smriti and hoping to find someone referencing them. No luck yet,but I came across some sources of great Ayurvedic research. Wow.

US National Library of Medicine/ National Institutes of Health: Just put "Ayurveda" in the search box

The Ayujournal: An International Quarterly Journal of Research in Ayurveda

Also important to make sure you search for Ayurvedic studies with Google Scholar (not commercial style google). 

Now to continue my research to understand the relationship of these three better: dhī, dhṛti and smṛti

Primary source research tool:
http://sarit.indology.info/
from http://indology.info/

And also:
Philipp A Maas

Dominik Wujastyk

Archive books

Survey addition of Charaka

Charaka Samhita Online