TY - JOUR AU - S. B. Klimentov TI - A priori estimates for the derivatives of the radius-vector of a~surface of positive curvature JO - Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara PY - 1987 SP - 187 EP - 213 VL - 19 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/INTG_1987_19_a5/ LA - ru ID - INTG_1987_19_a5 ER -