%0 Journal Article %T Recense %J Applications of Mathematics %D 1976 %P 148-160 %V 21 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1976.103633/ %R 10.21136/AM.1976.103633 %G cs %F 10_21136_AM_1976_103633