Towards Aim-Oriented Empiricism

A Critique of Popper's Views of Scientific Method, Philosophy of Science 39, 1972, pp. 131-52.

The Rationality of Scientific Discovery, Part I: The Traditional Rationality Problem, Philosophy of Science 41, 1974, pp. 123-53.

The Rationality of Scientific Discovery, Part II: An Aim Oriented Theory of Scientific Discovery, Philosophy of Science 41, 1974, pp. 247-95.

Articulating the Aims of Science, Nature 265, 1977, p. 2.

Induction, Simplicity and Scientific Progress, Scientia 114, 1979, pp. 629-53. (Italian translation, pp. 655-74.)