CUPINI, G.; LANCONELLI, E. On Mean Value formulas for solutions to second order linear PDEs. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 22, n. 2, p. 777-809, 2021. DOI: 10.2422/2036-2145.201904_014. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/797. Acesso em: 20 feb. 2026.