[1] BRUCKNER A. M., CEDER J. G.: 
Darboux continuity. Jber. Deutsch. Math.-Verein., 67, 1965, 93-117. 
MR 0186761 | 
Zbl 0144.30003[2] BRUCKNER A. M., CEDER J. G., WEISS MAX: 
Uniform limits of Darboux functions. Coll. Math., 15, 1966, 65-77. 
MR 0197629[3] GARRETT B. D., NELMS D., KELLUM K. R.: 
Characterizations of connected real functions. Jber. Deutsch. Math.-Verein., 73, 1971, 131-137. 
MR 0486349 | 
Zbl 0226.26006[4] LIPIŇSKI J. S.: 
On Darboux points. Bull. Acad. Polon. Sci., Sér. Sci. Math. Astr. Phys., 26, 1978, 869-873. 
MR 0524916 | 
Zbl 0399.26005[5] ROSEN H.: 
Connectivity points and Darboux points of real functions. Fund. Math., 89, 1975, 265-269. 
MR 0382560 | 
Zbl 0316.26004