%0 Journal Article %T Upozornění %J Applications of Mathematics %D 1965 %V 10 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1965.102993/ %R 10.21136/AM.1965.102993 %G cz %F 10_21136_AM_1965_102993