the periodic coincidence points of continuius maps and lindemann’s. Baghdad Science Journal, Iraq, Baghdad, v. 2, n. 4, p. 680–683, 2005. DOI: 10.21123/bsj.2005.667. Disponível em: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/667.. Acesso em: 12 jul. 2025.