Liu, Feng, Qingying Xue, and Kôzô Yabuta. “Sobolev Boundedness and Continuity for Commutators of the Local Hardy–Littlewood Maximal Function”. Annales Fennici Mathematici 47, no. 1 (December 31, 2021): 203–235. Accessed December 4, 2024. https://afm.journal.fi/article/view/113296.