Dakṣiṇa Kosala kā prācīna itihāsa : prārambha se kalacuriyoṃ ke āgamana taka - Miśra, Prabhulāla (Saralā Miśra, 2003)
Ancient history of Kosala, Kingdom in the region of Oudh; covers the period, 4th century A.D. to 10th century A.D