Diskalkar, D. B. (1993), Sanskrit and Prakrit Poets Known from Inscriptions, Anandashram Samstha, p. 122 Quote: "Balasarasvati, author of an inscription dated S. 1135 [c. 1057 CE] had lived at the court of Prola Reddi, ruler of the same Kakatiya [dynasty]."
Andhra Pradesh (India); Bh Sivasankaranarayana (1976). Andhra Pradesh district gazetteers. Printed by the Director of Print. and Stationery at the Govt. Secretariat Press. p. 39,40.