TY - JOUR AU - A. Zięba TI - An elementary proof of von Neumann's minimax theorem JO - Colloquium Mathematicum PY - 1956 SP - 224 EP - 226 VL - 4 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-4-2-224-226/ DO - 10.4064/cm-4-2-224-226 LA - en ID - 10_4064_cm_4_2_224_226 ER -