%0 Journal Article %A Đula Mešter %T A variational approach to the problem of free damped longitudinal oscillations of a prismatic beam with a nonlinear elastic characteristic %J Theoretical and applied mechanics %D 1977 %P 53 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1977_3_1_a7/ %G en %F TAM_1977_3_1_a7