@misc{Stolz_Claude_Energy_2004, author={Stolz, Claude}, copyright={Creative Commons Attribution BY 4.0 license}, address={Warsaw}, journal={Lecture Notes - AMAS}, howpublished={online}, year={2004}, publisher={Centre of Excellence for Advanced Materials and Structures}, publisher={IPPT PAN}, language={eng}, title={Energy methods in non-linear mechanics}, type={Text}, URL={http://www.rcin.org.pl/Content/67635/PDF/WA727_24974_56185_Energy-Methods.pdf}, keywords={Mechanika nieliniowa [KABA], Mechanika nieliniowa}, }