%0 Journal Article %T Recense %J Applications of Mathematics %D 1973 %V 18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1973.103460/ %R 10.21136/AM.1973.103460 %G cz %F 10_21136_AM_1973_103460