Diluka Loku Galappaththige Fatemeh Rezaei Chintha Tellambura Sanjeewa P. Herath Beamforming Designs for Enabling Symbiotic BackCom Multiple Access Under Imperfect CSI. 89986-90005 2023 11 IEEE Access https://doi.org/10.1109/ACCESS.2023.3307516 https://www.wikidata.org/entity/Q125467211 db/journals/access/access11.html#GalappaththigeRTH23