ASSAD, N. A. A FIXED POINT THEOREM FOR SOME NON-SELF-MAPPINGS. Tamkang Journal of Mathematics, [S. l.], v. 21, n. 4, p. 387–393, 1990. DOI: 10.5556/j.tkjm.21.1990.4687. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4687. Acesso em: 19 apr. 2024.