@article{prokić_bešević_lukić_2014,  title={A numerical method for free vibration analysis of beams},  volume={11},  ISSN={1679-7825},  url={https://doi.org/10.1590/S1679-78252014000800009},  DOI={10.1590/S1679-78252014000800009},  number={8},  journal={Latin American Journal of Solids and Structures},  publisher={Individual owner},  author={Prokić, A. and Bešević, M. and Lukić, D.},  year={2014},  month={Dec},  pages={1432–1444} }