%0 Journal Article %A Hampl, Miloslav %T Zprávy %J Applications of Mathematics %D 1968 %P 429-434 %V 13 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1968.103190/ %R 10.21136/AM.1968.103190 %G cz %F 10_21136_AM_1968_103190