@misc{Booker_J.R._A_1977,
 author={Booker, J.R.},
 volume={29},
 number={1},
 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},
 language={fre},
 type={Text},
 title={A theorem for limiting lines in a perfectly plastic material},
 URL={http://www.rcin.org.pl/Content/117117/PDF/WA727_91603_P.262b-Booker-A-theorem.pdf},
 keywords={Mechanika stosowana - czasopisma [KABA]},
}