%0 Journal Article %T News and Notices %J Applications of Mathematics %D 1972 %P 74 %V 17 %N 1 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1972.103397/ %R 10.21136/AM.1972.103397 %G cs %F 10_21136_AM_1972_103397