JHA, K.; PANT, R. P. Common fixed point theorems by altering distances. Tamkang Journal of Mathematics, [S. l.], v. 35, n. 2, p. 109-116, 2004. DOI: 10.5556/j.tkjm.35.2004.212. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/212. Acesso em: 24 may. 2022.