Atamas’I. V., and Slyn’koV. I. “Stability of Fixed Points for a Class of Quasilinear Cascades in the space Conv $R^n$”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, no. 8, Aug. 2017, pp. 1166-79, https://umj.imath.kiev.ua/index.php/umj/article/view/1766.