Book in Tamil by Sri U Ve Puttur Krishnaswami Iyengar Swami http://www.acharya.org/bk/pb/pki/sb11.pdf
Prapannanushtana Bhaskaram
1934 Book in Tamil by V Ramanujan Iyengar Swami http://acharya.org/bk/pb/vri/pab.pdf
Yatindra Pravana Prabhavam
By Pillailokam Jeeyar1907 Book in Mani Pravalam http://acharya.org/bk/pb/plj/ypp1907.pdf