DAY, Stuart; TAHERI, Ali. Geodesics on ${\bf SO}(n)$ and a class of spherically symmetric maps as solutions to a nonlinear generalised harmonic map problem. Topological Methods in Nonlinear Analysis, [S. l.], v. 51, n. 2, p. 637–662, 2018. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2018.020. Acesso em: 8 jul. 2025.