@misc{Gregorczyk_Magdalena_Harmonic,
 author={Gregorczyk, Magdalena and Widomski, Jarosław},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 type={artykuł},
 title={Harmonic mappings in the exterior of the unit disk},
 keywords={matematyka},
}