Hudzenko, S. V. “Automorphisms of a Finitary Factor Power of an Infinite Symmetric Group”. Ukrains’kyi Matematychnyi Zhurnal 62, no. 7 (July 25, 2010): 997–1001. Accessed March 28, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2931.