Article in Tamil http://acharya.org/ar/misc/iusvv.pdf
Harita Smruti
Book http://acharya.org/bk/pb/vu/hs.pdf
Kathopanishad Commentary
Book in Tamil http://acharya.org/bk/pb/Vyakhyanam/kathauvt.pdf
Ramayana Thani Shlokam 3.15.29 Upanyasam
Upanyasam in Tamil by TCA Venkatesan https://srivaishnava.bandcamp.com/track/ramayana-thani-shlokam-31529-tamil
Prashnopanishad Commentary
Book in Tamil http://acharya.org/bk/pb/Vyakhyanam/prashnauvt.pdf