Flin, F., Brzoska, J.-B., Lesaffre, B., Coleou, C., & Lamboley, P. (2011). COMPUTATION OF NORMAL VECTORS OF DISCRETE 3D OBJECTS: APPLICATION TO NATURAL SNOW IMAGES FROM X-RAY TOMOGRAPHY. Image Analysis and Stereology, 20(3), 187–191. https://doi.org/10.5566/ias.v20.p187-191