Articles discussing Hamvira
Date of the Kāñci‑Kāverī Expedition—A reply
P. Mukherjee · The Indian Historical Quarterly, 1951
“Thus the Kafci expedition of Purusottama very probably took place between November 1467 and 1471, when Muhammad wrested Telingana with the help of Hamvira from Purusottama.”
Kaici Kaveri Expedition of Purusottama Gajapati—Its probable date