Gumenchuk, A., I. Krasikova, and M. Popov. “On Linear Sections of Orthogonally Additive Operators”. Matematychni Studii 58, no. 1 (October 31, 2022): 94-102. Accessed May 1, 2024. http://matstud.org.ua/ojs/index.php/matstud/article/view/332.