SPR¨OSSIG, Wolfgang. Quaternionic analysis and Maxwell‘s equations. CUBO, A Mathematical Journal, [S. l.], v. 7, n. 2, p. 57–67, 2005. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1542. Acesso em: 3 nov. 2025.