Wijetunga, Wijetunga Mudalige Karunaratna (1962), "First Phase: Relations between the Sinhalese and the Cholas up to the time of Rajaraja I", The rise and decline of Chola power in Ceylon, pp. 75–107, doi:10.25501/SOAS.00029338
Spencer 1976, pp. 416–417: "Under Rajendra Chola 1, perhaps the most aggressive king of his line, Chola raids were launched southward from Rajarata to Rohana. By his fifth year, Rajendra claimed to have completely conquered Ceylon, a claim that has led some historians to assert that Rajendra" completed "the conquest Rajaraja had begun" "But the Cholas never really consolidated their control over southern Ceylon, which in any case lacked large and prosperous settlements to tempt long-term Chola occupation." "Kassapa assumed the title of VikkamabahuI and ruled" in Rohana for several years(c. I029-Io4I)." Spencer, George W. (May 1976). "The Politics of Plunder: The Cholas in Eleventh-Century Ceylon". The Journal of Asian Studies. 35 (3): 405–419. doi:10.2307/2053272. JSTOR2053272. S2CID154741845.
Wijetunga, Wijetunga Mudalige Karunaratna (1962), "First Phase: Relations between the Sinhalese and the Cholas up to the time of Rajaraja I", The rise and decline of Chola power in Ceylon, p. 301, doi:10.25501/SOAS.00029338
The Jungle Tide:“Collapse” in Early Mediaeval Sri Lanka STRICKLAND, KEIR ,MAGALIE (2011) The Jungle Tide: “Collapse” in Early Mediaeval Sri Lanka. Doctoral thesis, Durham University. P.331 http://etheses.dur.ac.uk/893/
Spencer 1976, pp. 416–417: "Under Rajendra Chola 1, perhaps the most aggressive king of his line, Chola raids were launched southward from Rajarata to Rohana. By his fifth year, Rajendra claimed to have completely conquered Ceylon, a claim that has led some historians to assert that Rajendra" completed "the conquest Rajaraja had begun" "But the Cholas never really consolidated their control over southern Ceylon, which in any case lacked large and prosperous settlements to tempt long-term Chola occupation." "Kassapa assumed the title of VikkamabahuI and ruled" in Rohana for several years(c. I029-Io4I)." Spencer, George W. (May 1976). "The Politics of Plunder: The Cholas in Eleventh-Century Ceylon". The Journal of Asian Studies. 35 (3): 405–419. doi:10.2307/2053272. JSTOR2053272. S2CID154741845.
Spencer 1976, pp. 416–417: "Under Rajendra Chola 1, perhaps the most aggressive king of his line, Chola raids were launched southward from Rajarata to Rohana. By his fifth year, Rajendra claimed to have completely conquered Ceylon, a claim that has led some historians to assert that Rajendra" completed "the conquest Rajaraja had begun" "But the Cholas never really consolidated their control over southern Ceylon, which in any case lacked large and prosperous settlements to tempt long-term Chola occupation." "Kassapa assumed the title of VikkamabahuI and ruled" in Rohana for several years(c. I029-Io4I)." Spencer, George W. (May 1976). "The Politics of Plunder: The Cholas in Eleventh-Century Ceylon". The Journal of Asian Studies. 35 (3): 405–419. doi:10.2307/2053272. JSTOR2053272. S2CID154741845.