[1] BLEDSOE W. W.: 
Neighbourly functions. Proc. Amer. Math. Soc. 3, 1952, 114-115. 
MR 0045791 
[3] MARCUS S.: 
Sur les fonctions quasicontinues au sense de S. Kempisty. Coll. Math. 8, 1961, 47-53. 
MR 0125915 
[5] NEUBRUNN T.: 
A generalized continuity and product spaces. Math. Slovaca 26, 1976, 97-99. 
MR 0436064 | 
Zbl 0318.54008 
[6] NEUBRUNN T.: 
Generalized continuity and separate continuity. Math. Slovaca 27, 1977, 307-314. 
MR 0536149 | 
Zbl 0371.54022 
[7] NEUBRUNNOVÁ A.: 
On quasicontinuous and cliquish functions. Časop. pěst. mat. 99, 1974, 109-114. 
MR 0360948 
[8] PIOTROWSKI Z.: 
Continuity points in {x} x Y. Bull. Soc. Math. France 108, 1980, 113-115. 
MR 0603343