Roth, A. E., and F. Schoumaker. "Subjective Probability and the Theory of Games: Some Further Comment." Management Science 29, no. 11 (November 1983): 1337–1340.
Kohlberg, Elon, and Philip J. Reny. "Independence on Relative Probability Spaces and Consistent Assessments in Game Trees." Harvard Business School Working Paper, No. 96-072, June 1996.