MARIA KUMAN. Nonlinear Mathematical Model in Torus Representation Explains the Elliptical Planetary Orbits and the Cycle of Precession of Our Sun. Global Journal of Science Frontier Research, [S. l.], v. 19, n. A10, p. 15–18, 2019. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/2549. Acesso em: 1 dec. 2022.