S. B. Bodnaruk, “Dependence of the Green’s function of a linear extension of a dynamical system on a torus upon a parameter”, Ukr. Mat. Zhurn., vol. 47, no. 3, pp. 419–421, Mar. 1995, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5434