Bodaghi A, Narasimman P, Ravi K, Shojaee B. Mixed type of additive and quintic functional equations. Ann. Math. Sil. [Internet]. 2015 Sep. 30 [cited 2025 Apr. 16];29:35-50. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/13976