"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.
Mitra, Debala (2004). Ajanta. Archaeological Survey of India. pp. 94-95.
books.google.com
Buddhist Landscapes in Central India: Sanchi Hill and Archaeologies of Religious and Social Change, c. Third Century BC to Fifth Century AD, Julia Shaw, Routledge, 2016 p58-59