TY - JOUR AU - V. Soltan TI - Convex Surfaces with Planar Polar Sets and Point-Source Shadow-Boundaries JO - Journal of convex analysis PY - 2017 SP - 645 EP - 66 VL - 24 IS - 2 UR - http://geodesic.mathdoc.fr/item/JCA_2017_24_2_JCA_2017_24_2_a16/ ID - JCA_2017_24_2_JCA_2017_24_2_a16 ER -