illustrated by Ernst H. Kantorowicz, «Gods in Uniform» ProceedingsoftheAmericanPhilosophicalSociety 105.4 (August 1961):368-393), p. 383, fig. 34. Hoey
Schuyler. «Chinese Hexagrams, Trigrams, and the Binary System». ProceedingsoftheAmericanPhilosophicalSociety, Vol. 135, No. 4 (Dec.1991):586-7. Anthony