Shen, Ying, and Lanzhe Liu. “LIPSCHITZ ESTIMATES FOR MULTILINEAR COMMUTATOR OF LITTLEWOOD- PALEY OPERATOR”. Italian Journal of Pure and Applied Mathematics 27 (December 15, 2010): 209–224. Accessed May 18, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/5816.