%0 Journal Article %T Recenze %J Applications of Mathematics %D 1975 %P 457-460 %V 20 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103613/ %R 10.21136/AM.1975.103613 %G cz %F 10_21136_AM_1975_103613