PINTEA, Cornel. Relative and mutual monotonicity. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 67, n. 1, p. 55–72, 2022. DOI: 10.24193/subbmath.2022.1.05. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1443. Acesso em: 5 feb. 2025.