@misc{Prohorov_Dmitrij_Vladimirovič_Coefficient_1981,
 author={Prohorov, Dmitrij Vladimirovič and Szynal, Jan},
 volume={29},
 editor={Polska Akademia Nauk},
 editor={Państwowe Wydawnictwo Naukowe (1951–1992)},
 number={5-6},
 copyright={Rights Reserved - Restricted Access},
 address={Varsovie},
 howpublished={online},
 year={1981},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 title={Coefficient estimates for bounded nonvanishing functions},
 type={Text},
}