%0 Journal Article %T Recenze %J Applications of Mathematics %D 1971 %P 452-459 %V 16 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1971.103381/ %R 10.21136/AM.1971.103381 %G cz %F 10_21136_AM_1971_103381