TY - JOUR TI - News and Notices JO - Applications of Mathematics PY - 1967 SP - 240 VL - 12 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1967.103096/ DO - 10.21136/AM.1967.103096 LA - cs ID - 10_21136_AM_1967_103096 ER -