%0 Journal Article %T Recense %J Applications of Mathematics %D 1975 %P 63-66 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103566/ %R 10.21136/AM.1975.103566 %G cz %F 10_21136_AM_1975_103566