1. Galilei G. Sidereus Nuncius (Sidereal Messenger) (in Neo-Latin). Published on March 13, 1610. Van Helden Albert. Galileo Galilei, Sidereus Nuncius, or the Sidereal Messenger (translation with introduction, conclusion and notes). Chicago and London: The University of Chicago Press, 1989. 127.
2. Song L. History of Yuan Dynasty (in Chinese). Beijing: Zhonghua Book Company, 1976 [宋濂. 元史. 北京: 中华书局, 1976].
3. Brahe T. Astronomiae Instauratae Mechanica. Wandesburgi: Cum Cæsaris, 1598.
4. Kepler J. Astronomia Nova de Motibus Stellae Martis (Prague, 1609). Harmonice Mundi (Linz, 1619).
5. Galilei G. Discorsi e Dinostruzioni Matermatiche Intorno a Due Nuove Scienze (Elzevir, Leiden, 1638). Translated by Henry Crew and Alfonso de Salvio, Dialogues Concerning Two New Sciences. New York, Dover, 1954.