%0 Journal Article %T News and Notices %J Applications of Mathematics %D 1966 %P 332 %V 11 %N 4 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1966.103037/ %R 10.21136/AM.1966.103037 %G cs %F 10_21136_AM_1966_103037