TY - JOUR TI - News and Notices JO - Czechoslovak Mathematical Journal PY - 1961 SP - 156 EP - 160 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1961.100450/ DO - 10.21136/CMJ.1961.100450 LA - ge ID - 10_21136_CMJ_1961_100450 ER -