@misc{Cekus_Dawid_Damage,
 author={Cekus, Dawid and Miara Mateusz and Zamorska Izabela},
 howpublished={online},
 publisher={Wydaw. Politechniki Częstochowskiej},
 language={eng},
 type={artykuł},
 title={Damage identification of a beam with a variable cross-sectional area},
 keywords={Bernoulli-Euler beam, crack, damage free vibration, Green's functions, identification, vibration method},
}