Makeev Н. Н. Dynamics of a Rigid Body Permanent Motion in Pseudo-Euclidean Space. BULLETIN OF PERM UNIVERSITY. MATHEMATICS. MECHANICS. COMPUTER SCIENCE, [S. l.], n. 3 (62), p. 55–63, 2023. DOI: 10.17072/1993-0550-2023-3-55-63. Disponível em: http://press.psu.ru/index.php/Math/article/view/7886. Acesso em: 18 may. 2024.