Original: See Goldstein, Melvyn C., A History of Modern Tibet, p75 for details, a similar treaty, the tripartite Treaty of Kyakhta, was signed by Mongolia, the Republic of China and Russia on 25 May, 1915.
Simplified: See Goldstein, Melvyn C., A History of Modern Tibet, p75 for details Instead, a very similar treaty was signed by Mongolia, China, and Russia on 25 May, 1915.