@misc{Jeffrey_A._Some_1979,
 author={Jeffrey, A.},
 volume={31},
 number={4},
 copyright={Creative Commons Attribution BY 4.0 license},
 journal={Archives of Mechanics},
 address={Warszawa},
 howpublished={online},
 year={1979},
 publisher={Polish Scientific Publishers IFTR},
 language={eng},
 language={pol},
 language={rus},
 language={fre},
 type={Text},
 title={Some aspects of the mathematical modelling of long nonlinear waves},
 URL={http://rcin.org.pl/Content/80396/PDF/WA727_90175_P.262-Jeffrey-Some.pdf},
 keywords={Mechanika stosowana - czasopisma [KABA]},
}