Ingi Valdimarsson, Stefán. “On the Hessian of the Optimal Transport Potential ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 6, no. 3 (December 2, 2009): 441-456. Accessed May 28, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/131.