%0 Journal Article %A Šidák, Zbyněk %T Announcement %J Applications of Mathematics %D 1990 %V 35 %N 6 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1990.104425/ %R 10.21136/AM.1990.104425 %G en %F 10_21136_AM_1990_104425