TY - JOUR AU - Hans Herda TI - A characterization of spheres among compact 3-bodies satisfying Crofton's theorem JO - Colloquium Mathematicum PY - 1976 SP - 235 EP - 236 VL - 36 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-36-2-235-236/ DO - 10.4064/cm-36-2-235-236 LA - en ID - 10_4064_cm_36_2_235_236 ER -