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
Devadhiraja Panchakam Urai
Book in Tamil, by P B Annangarachariar SwamiCommentary for the work by Cholasimhapuram Doddaiyaachariar Swami http://acharya.org/bk/pb/pba/drpu.pdf
Periya Thirumozhi Aram Paththu
Third Edition, Text in Tamil and English http://acharya.org/dp/svDp.php?dp=2