1. Allen RE, ed. The concise Oxford dictionary of current English. 8th ed. Oxford: Oxford University Press, 1990.
2. The rise of scientific philosophy;Reichenbach, H.,1951
3. The logic of scientific discovery;Popper, K.R.,1959
4. Criticism and the growth of knowledge;Lakatos, I.,1970
5. Explanatory and pragmatic attitudes in clinical trials. J7 Chronic Dis;Schwarz, D.; Lellouch, J.,1967