"In Nagarjunakonda Scythian influence is noticed and the cap and coat of a soldier on a pillar may be cited as an example.", in Sivaramamurti, C. (1961). Indian Sculpture. Allied Publishers. p. 51.
"A Scythian dvarapala standing wearing his typical draperies, boots and head dress. Distinct ethnic and sartorial characteristics are noteworthy.", in Ray, Amita (1982). Life and Art of Early Andhradesa. Agam. p. 249.
"The Iksvakus Kings employed Scythian soldiers as their palace guards, and also an inscription hints that a colony of Scythians existed at Nagarjunakonda.", in The Journal of the Institution of Surveyors (India). Institution of Surveyors. 1967. p. 374.
"Another queen of Virapurusha was Rudradhara-bhattarika. According to D.C. Sircar she might have been related to Rudrasena II (c. a.d. 254-74) the Saka ruler of Western India" in Rao, P. Raghunadha (1993). Ancient and medieval history of Andhra Pradesh. Sterling Publishers. p. 23. ISBN9788120714953.
The Buddhist Antiquities of Nagarjunakonda, Madras Presidency by A. H. Longhurst. Journal of the Royal Asiatic Society, Volume 72, Issue 2–3 June 1940 , pp. 226–227 [1]
