Ciyuan Liu (2012). Discrepancies of calendar elements between astronomical records in 24 Histories and ChenYuan′s historical calendar. Journal of Time and Frequency.
Ciyuan Liu (2012). A Statistical Analysis for the Astronomical Records in Astronomical Chronicle of History of the Song Dynasty. Studies in the History of Natural Sciences.
Ciyuan Liu (2012). A statistical analysis of astronomical records in《JIN SHI》and《YUAN SHI》. Journal of Time and Frequency.
刘次沅(2011). 北魏太安至皇兴时期天象记录的年代问题. 《自然科学史研究》.
Ciyuan Liu (2011). Chronology Issues of Astronomical Records in the Period of Tai'an to Huangxing of the Northern Wei Dynasty. Studies in the History of Natural Sciences.
JiaBi Wu, Chen Meidong, Ciyuan Liu (2009). Astronomical function and date of the Taosi observatory. Science in China. Series G, Physics, mechanics & astronomy/Science in China. Series G, Physics, Mechanics & Astronomy.DOI
Ciyuan Liu (2009). Astronomical analysis of the taosi observatory site. Acta Astronomica Sinica.
Ciyuan Liu (2009). An Examination of Records of Astronomical Events of the Wei and Jin Dynasties. Zhongguo kejishi zazhi.
Ciyuan Liu, Xueshun Liu (2014). A Thorough Collation of Astronomical Records in the Twenty-Five Histories of China. Astrophysics and space science proceedings.DOI