Tiep Minh Hoang Chao Xu 0005 Alireza Vahid Hoang Duong Tuan Trung Q. Duong Lajos Hanzo Secrecy-Rate Optimization of Double RIS-Aided Space-Ground Networks. 13221-13234 2023 August 10 IEEE Internet Things J. 15 https://doi.org/10.1109/JIOT.2023.3262481 https://www.wikidata.org/entity/Q136302138 db/journals/iotj/iotj10.html#HoangXVTDH23