Arendt, Wolfgang, and Reiner Schätzle. “Semigroups Generated by Elliptic Operators in Non-Divergence Form on C-o(Ω)”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 13, no. 2 (June 16, 2014): 417-434. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/343.