KASPAREK, Erwin. The invariant straight lines of an affine transformation in ℝ^n without fixed points. Annales Mathematicae Silesianae, [S. l.], v. 24, p. 35–37, 2010. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14033. Acesso em: 26 apr. 2025.