GOLASI´NSKI, Marek. On homotopy nilpotency of the octonian plane $\mathbb{O}P^2$. Mathematica Scandinavica, Berkeley, CA, United States, v. 127, n. 3, 2021. DOI: 10.7146/math.scand.a-128541. Disponível em: https://journals.msp.org/mscand/article/view/139. Acesso em: 24 jul. 2026.