1. Akaike, H. (1973). Information theory and an extension of the maximum likelihood principle. In B. N. Petrov & F. Csaki (Eds.), Second international symposium on information theory, Budapest (pp. 267–281). Akademiai Kiado.
2. Albert, D. (2000). Time and chance. Cambridge, MA: Harvard University Press.
3. Aristotle (1941) Posterior analytics. In The basic works of Aristotle, R. McKeon (trans.), Random House.
4. Armstrong, A. (1983). What is a law of nature? Cambridge University Press.
5. Arrow, K. (1951). Social choice and individual values. John Wiley.