Ros-Oton, Xavier, and Marvin Weidner. “Obstacle Problems for Nonlocal Operators With Singular Kernels”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE (May 27, 2024): 17. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/6390.