%0 Journal Article %T Recense %J Applications of Mathematics %D 1975 %P 143-148 %V 20 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103576/ %R 10.21136/AM.1975.103576 %G cs %F 10_21136_AM_1975_103576