D’Aprile, Teresa, and Juncheng Wei. “Locating the Boundary Peaks of Least-Energy Solutions to a Singularly Perturbed Dirichlet Problem”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 5, no. 2 (December 4, 2009): 219-259. Accessed May 26, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/98.