Devyver, Baptiste. “A Perturbation Result for the Riesz Transform”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 14, no. 3 (September 11, 2015): 937-964. Accessed May 27, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/397.