TY - JOUR AU - T. Zamfirescu TI - On Two Conjectures of Franz Hering About Convex Surfaces. JO - Discrete & computational geometry PY - 1991 SP - 171 EP - 180 VL - 6 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131152/ ID - DCG_1991__6_4_131152 ER -