Developments of parabolic equation method in the period of 2000–2016
Xu Chuan-Xiu1, 2, Tang Jun1, 2, Piao Sheng-Chun1, 2, †, 
, Liu Jia-Qi1, 2, Zhang Shi-Zhao1, 2
, Liu Jia-Qi1, 2, Zhang Shi-Zhao1, 2 Developments of PE methods.
