Alf C. Zimmer

(2001)., The concept of perceptual "field' and the revolution in cognition caused by Köhler's physische Gestalten, in L. Albertazzi (ed.), The dawn of cognitive science, Dordrecht, Springer, pp. 251-267.

(1999)., What is form?, in L. Albertazzi (ed.), Shapes of forms, Dordrecht, Springer, pp. 51-88.

(1990)., Autonomous organization in perception and motor control, in H. Haken & M. Stadler (eds.), Synergetics of cognition, Dordrecht, Springer, pp. 332-351.