[[1] BRUCKNER, A.: Differentiation of Real Functions. Lectures Notes in Math., Vol. 659, Springer-Verlag, Berlin, 1978.10.1007/BFb0069821]Search in Google Scholar
[[2] EWERT, J.-LIPI ´NSKI, J.: On points of continuity, quasicontinuity and cliqiushnees ofreal functions, Real Anal. Exchange 8 (1983), 473-478.10.2307/44153418]Search in Google Scholar
[[3] GRANDE, Z.: Some observations on the symmetrical quasicontinuity of Piotrowski andVallin, Real Anal. Exchange 31 (2005-2006), 309-314.10.14321/realanalexch.31.1.0309]Search in Google Scholar
[[4] GRANDE, Z.: On the continuity of symmetrically cliquish or symmetrically quasicontinuousfunctions, Real Anal. Exchange 32 (2006-2007), 195-204.10.14321/realanalexch.32.1.0195]Search in Google Scholar
[[5] GRANDE, Z.: On the maximal multiplicative family for the class of quasicontinuousfunctions, Real Anal. Exchange 15 (1989-1990), 437-441.10.2307/44152029]Search in Google Scholar
[[6] GRANDE, Z.: On the maximal additive and multiplicative families for the quasicontinuitiesof Piotrowski and Vallin, Real Anal. Exchange 32 (2007), 511-518.10.14321/realanalexch.32.2.0511]Search in Google Scholar
[[7] GRANDE, Z.: On some special notions of approximate continuity, Real Anal. Exchange 24 (1998-1999), 171-183.10.2307/44152947]Search in Google Scholar
[[8] GRANDE, Z.-SOLTYSIK, L.: Some remarks on quasicontinuous real functions, Problemy Mat. 10 (1990), 79-86.]Search in Google Scholar
[[9] IOSIFESCU, M.: Conditions that the product of two derivbatives be a derivative, Rev. Roum. Math. Pures Appl. 4 (1959), 641-649. (In Russian)]Search in Google Scholar
[[10] KEMPISTY, S.: Sur les fonctions quasicontinues, Fund. Math. 19 (1932), 184-197.10.4064/fm-19-1-184-197]Search in Google Scholar
[[11] NEUBRUNN, T.: Quasi-continuity, Real Anal. Exchange 14 (1989), 259-306.10.2307/44151947]Search in Google Scholar
[[12] PIOTROWSKI, Z.-VALLIN, R. W.: Conditions which imply continuity, Real Anal. Exch. 29 (2003-2004), 211-217.10.14321/realanalexch.29.1.0211]Search in Google Scholar
[[13] TALL, F. D.: The density topology, Pacific J. Math. 62 (1976), 275-284.10.2140/pjm.1976.62.275]Search in Google Scholar