CSEH, Tünde; KAJÁNTÓ, Sándor; LUKÁCS, Andor. On possible generalisations of quasi-contractions. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 67, n. 3, p. 615–619, 2022. DOI: 10.24193/subbmath.2022.3.13. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1557. Acesso em: 5 feb. 2025.