%0 Journal Article %A Laczkovich, M. %T On the Difference Property of the Class of Pointwise Discontinuous Functions and of Some Related Classes %J Canadian journal of mathematics %D 1984 %P 756-768 %V 36 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1984-043-3/ %R 10.4153/CJM-1984-043-3 %F 10_4153_CJM_1984_043_3