%0 Journal Article %A Švec, Marko %T Periodic boundary value problem of a fourth order differential inclusion %J Archivum mathematicum %D 1997 %P 167-171 %V 33 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1997__33_1-2_a17/ %G en %F ARM_1997__33_1-2_a17