%0 Journal Article %T Recense %J Applications of Mathematics %D 1978 %P 231-236 %V 23 %N 3 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1978.103747/ %R 10.21136/AM.1978.103747 %G cs %F 10_21136_AM_1978_103747