Issues relating to the diverse and multifaceted doctrinal questions are covered by three research programs, a major one dealing with Esoteric and tantric Buddhist teachings in Eastern Central Asia, which will be devoted to linking up the available material from the Khotanese, Tibetan, Chinese, Tangut and Uyghur Buddhist traditions. This will be followed by a survey of Abhidharma-, Madhyamaka- and Vijñānavāda literature, and eventually be rounded off by a excursus into the import of Huayan Buddhism in Eastern Central Asia with focus on its presence in the Liao and Tangut cultures.