@misc{Himmel_Martin_Complementary,
 author={Himmel, Martin},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Śląskiego},
 publisher={De Gruyter Open},
 language={eng},
 title={Complementary results to Heuvers’s characterization of logarithmic functions},
 type={artykuł},
 keywords={matematyka},
}