TY - JOUR AU - Robert Osserman TI - Some Geometric Properties of Polynomial Surfaces. JO - Commentarii mathematici Helvetici PY - 1962 SP - 214 EP - 220 VL - 37 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMH_1962__37_139257/ ID - CMH_1962__37_139257 ER -