HEATH, P. R.; KEPPELMANN, E. C. Model solvmanifolds for lefschetz and nielsen theories. Quaestiones Mathematicae, [S. l.], v. 25, n. 4, p. 483–501, 2004. DOI: 10.2989/16073600209486033. Disponível em: https://www.ajol.info/index.php/qm/article/view/21681. Acesso em: 24 sep. 2026.