H Oda, M Tsukada, T Miura… - … of Mathematics and …, 2013 - Wiley Online Library
… y 0 )-additive mappings at all; however, we will get the following stability theorems for them.
… 1, −1,1; x 0 , y 0 )-additive mappings. These cover all of the systems of (a, −a, c, −c; x 0 , y 0 )-…