FENTON, P.; ROSSI, J. Two-variable Wiman-Valiron theory and PDEs. Annales Fennici Mathematici, [S. l.], v. 35, n. 2, p. 571–580, 2010. DOI: 10.5186/aasfm.2010.3535. Disponível em: https://afm.journal.fi/article/view/135325. Acesso em: 14 apr. 2025.