Alf C. Zimmer
The concept of perceptual "field' and the revolution in cognition caused by Köhler's physische Gestalten
2001
in: The dawn of cognitive science, Dordrecht : Springer
What is form?
1999
in: Shapes of forms, Dordrecht : Springer
Autonomous organization in perception and motor control
1990
in: Synergetics of cognition, Dordrecht : Springer