%0 Journal Article %A C. Kassimatis %T On generalized derivatives %J Studia Mathematica %D 1964 %P 369-371 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-25-3-369-371/ %R 10.4064/sm-25-3-369-371 %G en %F 10_4064_sm_25_3_369_371