@ARTICLE{Obara_P._Dynamic_2016, author={Obara, P. and Gilewski, W.}, volume={64}, number={No 4 (Special Section on Civil Engineering – Ongoing Technical Research. Part I)}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={739-750}, howpublished={online}, year={2016}, title={Dynamic stability of moderately thick beams and frames with the use of harmonic balance and perturbation methods}, URL={http://so.czasopisma.pan.pl/Content/105739/PDF/10.1515bpasts-2016-0083.pdf}, doi={10.1515/bpasts-2016-0083}, }