%0 Journal Article %A Miguel de Guzmán %T On the derivation and covering properties of a differentiation basis %J Studia Mathematica %D 1972 %P 359-364 %V 44 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-44-4-359-364/ %R 10.4064/sm-44-4-359-364 %G en %F 10_4064_sm_44_4_359_364