Nadine, Badr, and Ben Ali Besma. “L<sup>p</sup> Boundedness of Riesz Transform Related to Schroedinger Operators on a Manifold ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 8, no. 4 (December 21, 2009): 725-765. Accessed May 29, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/190.