1. Albers, J. 1963. Interaction of color. New Haven, CT: Yale University Press.
2. Adelson, E.H. 1993. Perceptual organization and the judgment of brightness. Science 262:2042–2044
3. Albertazzi, L. 1998. Form metaphysics. In Shapes of forms, ed. L. Albertazzi, From gestalt psychology to phenomenology to ontology and mathematics, 261–310. Dordrecht: Kluwer academic.
4. Albertazzi, L. 1999. The time of presentness. A chapter in positivistic and descriptive psychology. In Vittorio benussi, ed. S. Cattaruzza, special issue of Axiomathes, 10, 49–74.
5. Albertazzi, L. 2000a. Which Semantics. In Meaning and cognition. A multidisciplinary approach, ed. L. Albertazzi, 1–24. Amsterdam: Benjamins Publishing Company.