Not all these books are accurate. Many contain wild discrepancies in their understanding of the Nirvani Sanyasis and the Mahanirvani Peetam and it’s history. There are listed here only for people to understand the different views prevalent in the world.
Ganga Cauvery Publishing House, Varanasi 1993 – 255 pages
Brill Leiden, Boston 2006
WARRIOR ASCETICS AND INDIAN EMPIRES
William R Pinch