@misc{Ziegler_Michael_R._(1942-_)_An,
 author={Ziegler, Michael R. (1942- )},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 type={artykuł},
 title={An Extremal Problem for Functions of Positive Real Part with Vanishing Coefficients},
 keywords={matematyka},
}