1. Broome, J. (1999). Normative requirements. Ratio, 12, 398–419.
2. Dreier, J. (2009). Practical Conditionals. In D. Sobel & S. Wall (Eds.), Reasons for action. Cambridge: Cambridge University Press.
3. Eder, A.-M. A. (2015). No match point for the permissibility account. Erkenntnis, 80, 657–673.
4. Hall, N., & Paul, L. A. (2003). Causation and Preemption. In P. Clark & K. Hawley (Eds.), Philosophy of science today. Oxford: Oxford University Press.
5. Hintikka, J. (1970). Some main problems of deontic logic. In R. Hilpinen (Ed.), Deontic logic: Introductory and systematic readings. Dordrecht: Springer.