BANERJEE , Abhijit; MAJUMDER , Sujoy. Some results on a question of Li, Yi and Li. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 64, n. 3, p. 367–385, 2019. DOI: 10.24193/subbmath.2019.3.08. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2309. Acesso em: 5 feb. 2025.