%0 Journal Article %A Rudolf, Boris %T An existence and multiplicity result for a periodic boundary value problem %J Mathematica Bohemica %D 2008 %P 41-61 %V 133 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/MB.2008.133946/ %R 10.21136/MB.2008.133946 %G en %F 10_21136_MB_2008_133946