@misc{Hsiao_Hung_Kuei_Radial,
 author={Hsiao, Hung Kuei and Smarzewski, Ryszard},
 howpublished={online},
 publisher={nakładem Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng},
 type={artykuł},
 title={Radial and Optimal Selections of Metric Projections onto Balls},
 keywords={metric projections onto balls, Banach spaces},
}