The focus of this article is the history of one branch of Christianity, the Church of the East (also known as the Nestorian Church), in Central Asia, the heartland of the Turkic world. The scope of the article includes both adjacent areas where Turkic peoples have lived (such as Mongolia) and adjacent non-Turkic peoples who have lived alongside the Turks in Central Asia (primarily various Iranian-speakers)

https://www.academia.edu/398258/Nestorian_Christianity_In_Central_Asia