Нооshmаnd МН. Functions of ultraexponential and infralogarithm types and general solution of the Abel functional equation. Ukr. Mat. Zhurn. [Internet]. 2011 Feb. 25 [cited 2025 Apr. 24];63(2):281-8. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2716