with Stadler, M. , 2004, Appearance of structure and emergence of meaning in the visual system, in A. Carsetti (ed.), Seeing, thinking and knowing, Dordrecht, Springer, pp. 293-306.
with Stadler, M. , Pfaff, S. , 1999, Towards a theory of figural form, in L. Albertazzi (ed.), Shapes of forms, Dordrecht, Springer, pp. 107-122.
with Stadler, M. , 1990, Stability and instability in cognitive systems: multistability, suggestion, and psychosomatic interaction, in H. Haken & M. Stadler (eds.), Synergetics of cognition, Dordrecht, Springer, pp. 201-215.
with Stadler, M. , 1990a, The self-organization perspective in cognition research: historical remarks and new experimental approaches, in H. Haken & M. Stadler (eds.), Synergetics of cognition, Dordrecht, Springer, pp. 32-52.