Book Xu, Zhentao; Pankenier, David W.; Jiang, Yaotiao (2000)
East Asian Archaeoastronomy: Historical Records of Astronomical Observations of China, Japan and Korea. (/isis/citation/CBB000111407/) unapi

Article Xu, Zhentao; Yau, Kevin K.C.; Stephenson, F. Richard (1989)
Astronomical records on the Shang Dynasty oracle bones. Archeoastronomy (Supplement to Journal for the History of Astronomy) (pp. 61-72). (/isis/citation/CBB000050915/) unapi

Article Xu, Zhentao (1989)
The basic forms of ancient Chinese sunspot records. Chinese Science (pp. 19-28). (/isis/citation/CBB000034183/) unapi