%0 Journal Article %T Recense %J Applications of Mathematics %D 1966 %P 417-420 %V 11 %N 5 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1966.103047/ %R 10.21136/AM.1966.103047 %G cs %F 10_21136_AM_1966_103047