Alarcón, Salomón, Jorge García-Melián, and Alexander Quaas. “Optimal Liouville Theorems for Supersolutions of Elliptic Equations With the Laplacian ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 16, no. 1 (March 31, 2016): 129-158. Accessed May 27, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/448.