Surface-Based Techniques for IoT Networks: Opportunities and Challenges. - Alessio Zappone; Marco Di Renzo; Robert Kuku Fotock (IEEE Internet Things Mag., 2022)

Energy Efficiency Maximization in RIS-aided Networks with Global Reflection Constraints. - Robert Kuku Fotock; Alessio Zappone; Marco Di Renzo (ICASSP, 2023)

Energy Efficiency in RIS-Aided Wireless Networks: Active or Passive RIS? - Robert Kuku Fotock; Alessio Zappone; Marco Di Renzo (ICC, 2023)

Secrecy Energy Efficiency Maximization in RIS-Aided Wireless Networks. - Robert Kuku Fotock; Alessio Zappone; Marco Di Renzo (ICC, 2024)

Secrecy Energy Efficiency Maximization in RIS-Aided Wireless Networks with Statistical CSI. - Robert Kuku Fotock; Agbotiname Lucky Imoize; Alessio Zappone; Marco Di Renzo; Roberto Garello (SPAWC, 2024)

Energy Efficiency Optimization in RIS-Aided Wireless Networks: Active Versus Nearly-Passive RIS With Global Reflection Constraints. - Robert Kuku Fotock; Alessio Zappone; Marco Di Renzo (IEEE Trans. Commun., 2024)

Secrecy Energy Efficiency Maximization in RIS-Aided Networks: Active or Nearly-Passive RIS? - Robert Kuku Fotock; Agbotiname Lucky Imoize; Alessio Zappone; Marco Di Renzo; Roberto Garello (CoRR, 2025)

Secrecy energy efficiency maximization in dual-metasurface-aided wireless networks. - Robert Kuku Fotock; Agbotiname Lucky Imoize; Alessio Zappone; Ciro D'Elia (EURASIP J. Adv. Signal Process., 2025)

Energy efficiency maximization in MIMO links aided by metasurfaces with global reflection constraints. - Aysegül Ilay Tunali; Robert Kuku Fotock; Alessio Zappone; Giorgio Taricco; Giuseppa Alfano; Hakan Ali Çirpan (EURASIP J. Adv. Signal Process., 2025)