Brito, Fabiano Gustavo Braga, and Daciberg L. Gonçalves. 1996. “Real and Complex Homogeneous Polynomial Ordinary Differential Equations in $n$-Space and $m$-Ary Real and Complex Non-Associative Algebras in $n$-Space”. Topological Methods in Nonlinear Analysis 8 (2):327-33. https://apcz.umk.pl/TMNA/article/view/TMNA.1996.036.