See for instance StephensonF. R., The historical supernovae (Oxford, 1977), and YauK. K. C.StephensonF. R.A catalogue of auroral observations from China, Korea and Japan (193 B.C. — A.D. 1770) (Rutherford Appleton Laboratory, Didcot, Oxfordshire, 1955).
2.
Han shu21B, 991–1011 in the standard punctuated edition (Zhonghua shuju, Beijing, 1962).
3.
For a general and fairly elementary introduction to the problems of early Chinese mathematical astronomy, see CullenC., Astronomy and mathematics in ancient China: The Zhou bi suan jing (Cambridge, 1996), 1–35. A shorter but more technical discussion centring on the San tong li will be found in CullenC., “The birthday of the Old Man of Jiang County and other puzzles: Work in progress on Liu Xin's Canon of the Ages”, Asia Major, xiv/2 (2004), 27–70.
4.
See XingGangSuiYun-Li, “A few supplementary decipherments of the fragmented almanacs collected in the Hanjian lipu”, China historical materials of science and technology, xxv (3) (2005), 250–61.
