For citations:
Baragunova L.A., Shogenova M.M., Shogenov O.M., Yafaunov E.A. Free vibrations of variablesection beams taking rotational and frictional forces into account. Bulletin of Science and Research Center of Construction. 2024;40(1):7-20. (In Russ.) https://doi.org/10.37538/2224-9494-2024-1(40)-7-20. EDN: ASUWBY