I Ching, Yijing or Zhou Yi
"Oracle of the moon": © 2000 LiSe
Yi Jing, Oracle of the Moon
Hexagram numerical symbols
"Some Observations about Milfoil Divination Based Upon Shang and Zhou bagua Numerical Symbols, by Zhang Yachu and Liu Yu (original in Kaogu 1981.2:155-63, 154.)"
Translated by Edward L. Shaughnessy, Early China 7 (1981-82), 46-54.