A line-expansion algorithm for the general routing problem with a guaranteed solution. - Walter Heyns; Willy Sansen; Herman Beke (DAC, 1980)

The 1-2-3 routing algorithm or the single channel 2-step router on 3 interconnection layers. - Walter Heyns (DAC, 1982)

Symbolic hierarchical artwork generation system. - Stef van Vlierberghe; Jeff Rijmenants; Walter Heyns (DAC, 1985)

Recursive Channel Router. - Walter Heyns; K. Van Nieuwenhove (DAC, 1988)

The GLOBCARBON initiative global biophysical products for terrestrial carbon studies. - Stephen Plummer; Olivier Arino; Franck Ranera; Kevin Tansey; Jing Chen; Gérard Dedieu; Hugh Eva; Isidoro Piccolini; Roland Leigh; Geert Borstlap; Bart Beusen; Walter Heyns; et al. (IGARSS, 2007)