%0 Journal Article %T News and Notices %J Applications of Mathematics %D 1986 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1986.104187/ %R 10.21136/AM.1986.104187 %G en %F 10_21136_AM_1986_104187