@misc{Sanecki_H._Basic_1977, author={Sanecki, H. and Życzkowski, M.}, volume={29}, number={2}, copyright={Licencja Creative Commons Uznanie autorstwa 4.0}, address={Warszawa}, journal={Archives of Mechanics}, howpublished={online}, year={1977}, publisher={Polish Scientific Publishers IFTR}, language={eng, streszcz. eng, pol, ros}, type={Tekst}, title={Basic equations of perfect plasticity parametrized by general stress functions + erratum}, URL={http://rcin.org.pl./Content/117074/PDF/WA727_91462_P.262-Sanecki-Basic.pdf}, keywords={Mechanika stosowana - czasopisma [KABA]}, }