@misc{Rahman_Q._I._The,
 author={Rahman, Q. I. and Qazi, M. A.},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng},
 type={artykuł},
 title={The Schwarz-Pick theorem and its applications},
 keywords={rational functions, Schwarz-Pick theorem, Bernstein's inequality},
}