1. Gibbard, Allan and Harper, William L., ?Counterfactuals and Two Kinds of Expected Utility?, in C. A. Hooker, J. Leach and E. F. McClennen (eds.), Foundations and Applications of Decision Theory, D. Reidel Publishing Company, Dordrecht, 1978.
2. Lewis, David, Counterfactuals, Basil Blackwell, Oxford, 1973.
3. Lewis, David, ?Counterfactual Dependence and Time's Arrow?, unpublished.