Galecka, Aleksandra. 2021. “A Proof of the Hurwit’z Theorem About Composition Algebras”. Annales Universitatis Paedagogicae Cracoviensis | Studia Ad Didacticam Mathematicae Pertinentia 13 (December):101-14. https://doi.org/10.24917/20809751.13.4.