On some properties of the set of Lyapunov ’s functions in the theory of linear extensions of dynamical systems on the torus. Neliniini Kolyvannya, [S. l.], v. 4, n. 4, p. 539–546, 2001. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/193. Acesso em: 22 jan. 2026.