@ARTICLE{Lewiński_T._Topology_2013, author={Lewiński, T. and Czarnecki, S. and Dzierżanowski, G. and Sokół, T.}, volume={61}, number={No 1}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={23-37}, howpublished={online}, year={2013}, title={Topology optimization in structural mechanics}, URL={http://www.journals.pan.pl/Content/83668/PDF/paper_02.pdf}, doi={10.2478/bpasts-2013-0002}, }