%0 Journal Article %A Rachůnková, Irena %A Tvrdý, Milan %A Vrkoč, Ivo %T Resonance and multiplicity in periodic boundary value problems with singularity %J Mathematica Bohemica %D 2003 %P 45-70 %V 128 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2003.133937/ %R 10.21136/MB.2003.133937 %G en %F 10_21136_MB_2003_133937