%0 Journal Article %T News and Notices %J Applications of Mathematics %D 1971 %P 83 %V 16 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1971.103332/ %R 10.21136/AM.1971.103332 %G cs %F 10_21136_AM_1971_103332