[1] R. Ger:
Some new conditions of continuity of convex functions. Mathematica, Cluj, 12 (35), 1970, pp. 271-277.
MR 0338293 |
Zbl 0217.37402
[2] R. Ger, Marek Kuczma:
On the boundedness and continuity of convex functions and additive functions. Aequationes Math. 4 (1970), pp. 157-162.
DOI 10.1007/BF01817756 |
MR 0264006
[4] Marek Kuczma: Problem P 35. Aequationes Math. 2 (1969), p. 378.