@misc{Murawski_Krzysztof._Model,
 author={Murawski, Krzysztof. and Koper, Roman.},
 howpublished={online},
 publisher={UMCS},
 language={eng},
 type={artykuł},
 title={Model equations for waves propagation in an infinite cylinder with thin walls of elastic rings},
 keywords={fizyka},
}