KISHORE, G.N.V.; RAO, B. Srinuvasa; RAO, R. Subba. Mixed monotone property and tripled fixed point theorems in partially ordered bipolar-metric spaces. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 42, p. 598–615, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7207. Acesso em: 27 oct. 2026.