Feng Liu and Huoxiong Wu, “A criterion on oscillation and variation for the commutators of singular integral operators”, Forum Mathematicum, 27:1 (2015), 77-97
Feng Liu, Qingying Xue and Kozo Yabuta, “Rough maximal singular integral and maximal operators supported by subvarieties on Triebel-Lizorkin spaces”, Nonlinear Analysis-Theory Methods & Applications, 171:1 (2018), 41-72
Feng Liu and Huoxiong Wu, “A note on the endpoint regularity of the discrete maximal operator”, Proceedings of the American Mathematical Society, 147:2 (2019), 583-596