Chiou, Yih-PengYih-PengChiouChang, Hung-chunHung-chunChang2018-09-102018-09-101997http://www.scopus.com/inward/record.url?eid=2-s2.0-0031377590&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/331983Efficient wide-angle beam propagation methodconference paper