Links

1. http://www.academia.edu/8213145/Musical_Threads_A_New_Musicological_Concept_discovered_from_the_Ancient_Indian_Music
2. www.musicresearch.in
3. https://www.scribd.com/document/244545987/Sound-of-Letters-and-Music
4. http://musictholkappiam.blogspot.in/
5. http://musicdrvee.blogspot.in/
6. http://veepandi.blogspot.in/