%0 Journal Article %A Rutka, Przemysław %A Smarzewski, Ryszard %T Extremal interpolatory problem of Fejér type for all classical weight functions %J Electronic transactions on numerical analysis %D 2012 %P 46-59 %V 39 %U http://geodesic.mathdoc.fr/item/ETNA_2012__39__a22/ %G en %F ETNA_2012__39__a22