%0 Journal Article %T Diskuse %J Applications of Mathematics %D 1966 %P 323-327 %V 11 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1966.103035/ %R 10.21136/AM.1966.103035 %G cz %F 10_21136_AM_1966_103035