@misc{Woźniak_Cz._On_1976, author={Woźniak, Cz.}, volume={28}, number={4}, copyright={Creative Commons Attribution BY 4.0 license}, address={Warszawa}, journal={Archives of Mechanics}, howpublished={online}, year={1976}, publisher={Polish Scientific Publishers IFTR}, language={eng}, language={pol}, language={rus}, title={On a certain generalization of the concept of simple material}, type={Text}, URL={http://rcin.org.pl/Content/123598/PDF/WA727_92216_P.262b-Wozniak-On-a-certain.pdf}, keywords={Mechanika stosowana - czasopisma [KABA]}, }