%0 Journal Article %A J. Marshall Ash %A Hajrudin Fejzić %T Approximate and $L^{p}$ Peano derivatives of nonintegral order %J Studia Mathematica %D 2005 %P 241-258 %V 170 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm170-3-3/ %R 10.4064/sm170-3-3 %G en %F 10_4064_sm170_3_3