See e.g. the apparently exhaustive list of China's border crossing in Xinjiang (新疆边贸口岸信息汇总Archive.is的存檔，存档日期2013-02-19, 2009-05-07), which includes no crossings on the border with Russia. The list of Russia's border crossings at rosgranitsa.ru does not include any crossings in that area either.
Burr, W.; Richelson, J. T. Whether to "Strangle the Baby in the Cradle": The United States and the Chinese Nuclear Program, 1960–64. International Security. 2000–2001, 25 (3): 54–99. JSTOR 2626706. doi:10.2307/2626706 (不活跃 2017-01-31).
Burr, W.; Richelson, J. T. Whether to "Strangle the Baby in the Cradle": The United States and the Chinese Nuclear Program, 1960–64. International Security. 2000–2001, 25 (3): 54–99. JSTOR 2626706. doi:10.2307/2626706 (不活跃 2017-01-31).
中华人民共和国和俄罗斯联邦关于中俄国界西段的协定 （页面存档备份，存于互联网档案馆） (Agreement between the PRC and RF in regard to the western section of the China-Russia border), 1994-09-03 （中文）
Chen, Qimao, Sino-Russian relations after the break-up of the Soviet Union, Chufrin, Gennady (编), Russia and Asia: the Emerging Security Agenda(PDF): 288–291, [2017-07-08], （原始内容(PDF)存档于2016-05-19）
中华人民共和国和俄罗斯联邦关于中俄国界西段的协定 （页面存档备份，存于互联网档案馆） (Agreement between the PRC and RF in regard to the western section of the China-Russia border), 1994-09-03 （中文）
Chen, Qimao, Sino-Russian relations after the break-up of the Soviet Union, Chufrin, Gennady (编), Russia and Asia: the Emerging Security Agenda(PDF): 288–291, [2017-07-08], （原始内容(PDF)存档于2016-05-19）
See e.g. the apparently exhaustive list of China's border crossing in Xinjiang (新疆边贸口岸信息汇总Archive.is的存檔，存档日期2013-02-19, 2009-05-07), which includes no crossings on the border with Russia. The list of Russia's border crossings at rosgranitsa.ru does not include any crossings in that area either.
