Binary Images of Sheared Rock Joints: Characterization of Damaged Zones Joëlle Riss, Sylvie Gentier, Katia Laffréchine, Rock Flamand and Guy ArchambaultMicrosc. Microanal. Microstruct., 7 5-6 (1996) 521-526DOI: https://doi.org/10.1051/mmm:1996153