@misc{Toborg_Imke_On,
 author={Toborg, Imke},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Śląskiego},
 publisher={De Gruyter Open},
 language={eng},
 title={On stability of the Cauchy functional equation in groupoids},
 type={artykuł},
 keywords={matematyka},
}