Südland, Norbert, Jörg Volkmann, and Dinesh Kumar. “Solution to Algebraic Equations of degree~4 and the Fundamental Theorem of Algebra by Carl Friedrich Gauss”. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica 21 (November 24, 2022): 57–70. Accessed October 8, 2024. https://studmath.uken.krakow.pl/article/view/9603.