P. . Viet Tuan, . V. . Anh Nghiem Quan, . P. . Ngoc Son, S. . Quang Nguyen, and P. . Viet Hung, “Exploiting Intelligent Reflecting Surface for Wireless Power Transfer via Optimization and Deep Learning Approaches”, ECTI-EEC, vol. 21, no. 3, p. 251465 , Oct. 2023.