@misc{Gallardo_Luis_H._Bell,
 author={Gallardo, Luis H.},
 howpublished={online},
 publisher={Uniwersytet Marii Curie-Skłodowskiej},
 language={pol},
 language={ang},
 type={artykuł},
 title={Bell numbers and Kurepa’s conjecture},
 keywords={chemia},
}