@misc{Koepf_Wolfram_Close-to-convex,
 author={Koepf, Wolfram},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 type={artykuł},
 title={Close-to-convex Functions, Univalence Criteria and Quasiconformal Extension},
 keywords={matematyka},
}