Team S. The Stability of the Pexiderized Cosine Functional Equation: C. Kusollerschariya, P. Nakmahachalasint. Thai J Math [Internet]. 2008 Dec. 31 [cited 2024 Apr. 29];6(3):39-44. Available from: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/132