%0 Journal Article %T Recense %J Applications of Mathematics %D 1964 %P 232-238 %V 9 %N 3 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1964.102900/ %R 10.21136/AM.1964.102900 %G cs %F 10_21136_AM_1964_102900