1. Hempel, Carl G., ?Deductive Nomological vs Statistical Explanation?, in Minnesota Studies in the Philosophy of Science (ed. by H. Feigl and G. Maxwell), Univ. of Minnesota Press, Minneapolis, 1962, pp. 98?169.
2. Hempel, Carl G., Aspects of Scientific Explanation, The Free Press, New York, 1965.
3. Hempel, Carl G., ?Maximal Specificity and Lawlikeness in Probabilistic Explanation?, Philosophy of Science 35 (1968), 116?134.
4. Salmon, Wesley C., ?Statistical Explanation?, in Statistical Explanation and Statistical Relevance (ed. by W. C. Salmon), Univ. of Pittsburgh Press, Pittsburgh, 1970, pp. 29?88.