1. Scientific Papers of T. C. Koopmans, Springer 1970, p. 148: New Epistemology for Economics: Berlin, New York.
2. For the development of Popper's philosophy, seeConjectures and Refutations andObjective Knowledge. Popper's truly fundamental work remainsThe Logic of Scientific Discovery. See also I. Lakatos' penetrating discussion of Popper's thought in Lakatos-Musgrove volume,Criticism and the Growth of Knowledge.)
3. T. W. Hutchison,The Significance of Basic Postulates in Economic Theory.
4. M. Friedman,Essays in Positive Economics, pp. 3–9.
5. “The Construction of Economic Knowledge” in Brodbeck M. (ed.),Readings In The Philosophy of the Social Sciences, New York/London21968, p. 536.