1. Barsalou , L. W. The instability of graded structure: Implications for the nature of concepts U. Neisser Concepts reconsidered: The ecological and intellectual bases of categories Cambridge University Press
2. Two common errors in explaining biological and psychological phenomena;Bechtel;Philosophy of Science,1982b
3. Bechtel , W. Building interlevel theories: The discovery of the Embden-Meyerhof pathway and the phosphate cycle G. Dorn P. Weingartner Selected papers from the 7th congress for logic, methodology, and philosophy of science Bibliopolis