%0 Journal Article %A Kopáčková, Marie %T On periodic solutions of some equations of mathematical physics %J Applications of Mathematics %D 1973 %P 33-42 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1973.103446/ %R 10.21136/AM.1973.103446 %G en %F 10_21136_AM_1973_103446