%0 Journal Article %T Optimal Beamforming for Covert Communication in MIMO Relay Systems %A Zhu, He %A Wu, Huihui %A Shen, Yulong %A Jiang, Xiaohong %J Transactions on Emerging Telecommunications Technologies %V 36 %N 2 %@ 1124-318X %D 2025-02-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve