%0 Journal Article %A Garrett, B.D. %T Some characterizations of pointwise discontinuous functions %J Portugaliae mathematica %D 1977 %P 197-201 %V 36 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1977__36_3-4_115315/ %G en %F PORMA_1977__36_3-4_115315