Phyo, Zar Chi; Taparugssanagorn, Attaphongse (2016). "Hybrid analog-digital downlink beamforming for massive MIMO system with uniform and non-uniform linear arrays". 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). pp. 1–6. doi:10.1109/ECTICon.2016.7561395. ISBN978-1-4673-9749-0. S2CID18179878.
Phyo, Zar Chi; Taparugssanagorn, Attaphongse (2016). "Hybrid analog-digital downlink beamforming for massive MIMO system with uniform and non-uniform linear arrays". 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). pp. 1–6. doi:10.1109/ECTICon.2016.7561395. ISBN978-1-4673-9749-0. S2CID18179878.