%0 Journal Article %A Stanko Brčić %T Undamped vibrations of elastic thin-walled beams of open deformable cross section %J Theoretical and applied mechanics %D 1976 %P 7 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1976_2_1_a1/ %G en %F TAM_1976_2_1_a1