@misc{Wilde_P._Two_1977,
 author={Wilde, P.},
 volume={29},
 number={6},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Archives of Mechanics},
 howpublished={online},
 year={1977},
 publisher={Polish Scientific Publishers IFTR},
 language={eng},
 language={pol},
 language={rus},
 title={Two invariants-dependent models of granular media},
 type={Text},
 URL={http://www.rcin.org.pl/Content/102569/PDF/WA727_91243_P.262-Wilde-Two.pdf},
 keywords={Mechanika stosowana - czasopisma [KABA]},
}