@misc{Pawełczyk_Sławomira_δ13C,
 author={Pawełczyk, Sławomira and Pazdur, Anna},
 howpublished={online},
 language={eng},
 type={artykuł},
 title={δ13C in tree rings α-cellulose : a methodology of measurements and interpretation : state of the art},
 keywords={pierścienie drzewa, celuloza},
}