@misc{Petryk_H._Energy_1988,
 author={Petryk, H.},
 volume={40},
 number={5-6},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Archives of Mechanics},
 howpublished={online},
 year={1988},
 publisher={Polish Scientific Publishers IFTR},
 language={eng},
 type={Text},
 title={Energy estimates of the onset of instability in tension test for orthotropic materials},
 URL={http://www.rcin.org.pl/Content/82371/PDF/WA727_18059_40-5-6-1988_AMS_Petryk-41.pdf},
 keywords={Mechanika stosowana - czasopisma [KABA]},
}