@misc{Litewka_A._Effective_1985, author={Litewka, A.}, volume={37}, number={6}, copyright={Creative Commons Attribution BY 4.0 license}, address={Warszawa}, journal={Archives of Mechanics}, howpublished={online}, year={1985}, publisher={Polish Scientific Publishers IFTR}, language={eng}, type={Text}, title={Effective material constants for orthotropically damaged elastic solid}, URL={http://www.rcin.org.pl/Content/135125/PDF/WA727_18074_37-6-1985_AMS_Litewka-07.pdf}, keywords={Mechanika stosowana - czasopisma [KABA]}, }