« The Korean Adaptation of the Chinese-Islamic Astronomical Tables ». Archive for History of Exact Sciences, 57 (2003), pp. 25-60.

During the early Yuan dynasty, in the last third of the 13th century, many Muslim scholars were brought to China by the Mongol rulers. A group of astronomers presumably of Iranian origin was active at the Islamic Astronomical Bureau in the Yuan capital near current-day Beijing, which had been founded by emperor Khubilai Khan. The astronomical handbook produced by these astronomers is extant in three different Chinese translations, whereas further traces of it can be found in various Chinese c..