I. Schafer

Multiple valued input generalised Reed-Muller forms

M. Perkowski, I. Schafer, 1992 .

Canonical restricted mixed-polarity exclusive-OR sums of products and the efficient algorithm for their minimisation

M. Perkowski, L. Csanky, I. Schafer, 1993 .

An efficient computer algorithm for the calculation of the Walsh transform for incompletely specified multiple-valued binary functions†

B. Falkowski, M. Perkowski, I. Schafer, 1993 .

An efficient computer algorithm for the calculation of Walsh transform for completely and incompletely specified multiple-valued input binary functions

B. Falkowski, M. Perkowski, I. Schafer, 1991, [1991] Proceedings of the 34th Midwest Symposium on Circuits and Systems.

An effective cube comparison method for discrete spectral transformations of logic functions

Ingo Schafer, I. Schafer, 1990 .

An effective computer algorithm for the calculation of disjoint cube representation of Boolean functions

Bogdan J. Falkowski, Chip-Hong Chang, I. Schafer, 1993, Proceedings of 36th Midwest Symposium on Circuits and Systems.