Prykarpatsky, A. K. (2008). An infinite-dimensional Borsuk-Ulam-type generalization of the Leray-Schauder fixed-point theorem and some applications. Ukrains’kyi Matematychnyi Zhurnal, 60(1), 100–106. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3141