%0 Journal Article %T Recense %J Applications of Mathematics %D 1958 %P 321-324 %V 03 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1958.102625/ %R 10.21136/AM.1958.102625 %G cz %F 10_21136_AM_1958_102625