Imre Lakatos, John Worrall, Gregory Currie (1980). “The Methodology of Scientific Research Programmes: Volume 1: Philosophical Papers”, p.50, Cambridge University Press
Imre Lakatos, John Worrall, Gregory Currie (1980). “The Methodology of Scientific Research Programmes: Volume 1: Philosophical Papers”, p.49, Cambridge University Press
Imre Lakatos, John Worrall, Gregory Currie (1980). “The Methodology of Scientific Research Programmes: Volume 1: Philosophical Papers”, p.68, Cambridge University Press