TY - JOUR TI - News and Notices JO - Applications of Mathematics PY - 1967 VL - 12 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1967.103120/ DO - 10.21136/AM.1967.103120 LA - cz ID - 10_21136_AM_1967_103120 ER -