%0 Journal Article %T Čtvrtá konference o nelineárních kmitech 1967 %J Applications of Mathematics %D 1967 %P 86 %V 12 %N 1 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1967.103071/ %R 10.21136/AM.1967.103071 %G cs %F 10_21136_AM_1967_103071