1. Beyond 5G/6G Whitepaper, National Institute of Information and Communications Technology (NICT) (2021)
2. Beyond 5G/6G Whitepaper, KDDI (2021). (Available Online) https://www.kddi-research.jp/tech/whitepaper_b5g_6g/
3. A. Pärssinen, in White Paper on RF Enabling 6G – Opportunities and Challenges from Technology to Spectrum, 6G Research Visions, No. 13 (2021)
4. Beyond 5G Promotion Roadmap -Roadmap to 6G, Ministry of Internal Affairs and Communications, Japan (2020). (Available Online) https://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/Beyond_5G_Promotion_Strategy-Roadmap_towards_6G-.pdf
5. IOWN initiative, NTT. (Available Online) https://www.rd.ntt/iown/