RETRACTED: Sharp and Weighted Boundedness for Multilinear Integral Operators
Xiuyun Xia, Huatao Chen, Hao Tian, Ye Wang, Yadan Shi
A Family of Periodic Orbits in the Liénard Differential Systems
Zouhair Diab, Juan L. G. Guirao, Amar Makhlouf, Huatao Chen