TY - JOUR AU - G. S. Stoller TI - Three problems of S. M. Ulam with solutions and generalizations JO - Colloquium Mathematicum PY - 1976 SP - 43 EP - 48 VL - 36 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-36-1-43-48/ DO - 10.4064/cm-36-1-43-48 LA - en ID - 10_4064_cm_36_1_43_48 ER -