G- Cyclicity And Somewhere Dense Orbit. Baghdad Science Journal, Iraq, Baghdad, v. 7, n. 2, p. 1053–1055, 2010. DOI: 10.21123/bsj.2010.11927. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/11927.. Acesso em: 19 oct. 2024.