BodnarukS. B. “Dependence of the Green’s Function of a Linear Extension of a Dynamical System on a Torus Upon a Parameter”. Ukrains’kyi Matematychnyi Zhurnal 47, no. 3 (March 25, 1995): 419–421. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5434.