1. Cardinality of sets of ϱ-upper and ϱ-lower continuous functions;Bienias;Bull. Soc. Sci. Lett. Łódź Sér. Rech. Déform.,2014
2. Sets of points of discontinuity;Bolstein;Proc. Am. Math. Soc.,1973
3. Some properties of porouscontinuous functions;Borsík;Math. Slovaca,2014
4. Differentiation of Real Functions;Bruckner,1978
5. Path derivatives: a unified view of certain generalized derivatives;Bruckner;Trans. Am. Math. Soc.,1984