1. Alfred F. MacKay, “Extended Sympathy and Interpersonal Utility Comparisons,” The Journal of Philosophy, Vol. 83, No. 6 (June 1986), pp. 305–322.
2. Ibid., p. 307.
3. Ralph L. Keeney and Howard Raiffa, Decision with Multiple Objectives: Preferences and Tradeoffs (New York: John Wiley and Sons, 1976), pp. 174–179.
4. C. L. Sheng, “A Note on Interpersonal Comparisons of Utility,” Theory and Decision, Vol. 21, No. 3 (1987), pp. 1–12.
5. C. L. Sheng, “A General Utility Function for Decision Making,” Mathematical Modelling, Vol. 5, No. 4 (1984), pp. 265–274.