^US Congressional Concurrent Resolution dated May 21, 1991, "To express the sense of the Congress that Tibet, including those areas incorporated into the Chinese provinces of Sichuan, Yunnan, Gansu and Qinghai that have historically been a part of Tibet is an occupied country under established principles of international law"... "Whereas in 1949-50, China launched an armed invasion of Tibet in contravention of international law..."
^Jane's 'Intelligence Review', 001122: 'China invaded the country in 1959 and has since been accused of bloody tactics to reduce the indigenous population and ensure it is outnumbered by the Chinese.'
^International Commission of Jurists,June 5 1959, "In 1950 China assured India that China had no intention of incorporating Tibet into China by force or otherwise and was willing to negotiate with Tibet regarding the future relationship of Tibet with China. But a few weeks later the invasion of Tibet took place..."
^Snellgrove, David L. and Hugh Richardson. A Cultural History of Tibet, Orchard Press, (c)2003, pg 267