TY - JOUR AU - Stanisław Gołąb TI - On the concept of the centre of the second curvature and on a generalization of a certain geometrical meaning of v. Lilienthal JO - Annales Polonici Mathematici PY - 1955 SP - 215 EP - 218 VL - 2 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-2-2-215-218/ DO - 10.4064/ap-2-2-215-218 LA - en ID - 10_4064_ap_2_2_215_218 ER -