Nadine, Badr, and Ben Ali Besma. 2009. “L^p Boundedness of Riesz Transform Related to Schroedinger Operators on a Manifold ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 8 (4):725-65. https://doi.org/10.2422/2036-2145.2009.4.05.