Boolean Operations in Open-Source Blender Project. - Marc Freixas; Sergi Grau; David Silva (SIACG, 2006)

Elements for a modular dynamic geometry system. - Marc Freixas; Robert Joan-Arinyo; Antoni Soto-Riera (SAC, 2008)

A constraint-based dynamic geometry system. - Marc Freixas; Robert Joan-Arinyo; Antoni Soto-Riera (Comput. Aided Des., 2010)

Characterization of threshold functions: state of the art, some new contributions and open problems. - Josep Freixas; Marc Freixas; Sascha Kurz (CoRR, 2016)