References
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- Putnam H. Reuson. truth, and history. Cambridge University Press, Cambridge 1981, Chapter 4
- Popper K. Conjectures and refutations. Routledge and Kegan Paul, London 1976; 190–192
- Hartshorne C, Weiss P. Collected papers of Churles Sunders Peirce. Some consequences of four incupucities. Harvard University Press, Cambridge, MA 1931