Day S, Taheri A. Geodesics on ${\bf SO}(n)$ and a class of spherically symmetric maps as solutions to a nonlinear generalised harmonic map problem. TMNA [Internet]. 21 maj 2018 [cytowane 22 lipiec 2024];51(2):637-62. Dostępne na: https://apcz.umk.pl/TMNA/article/view/TMNA.2018.020