Xu, J. ., Y. . Zhang, and X.-F. . Shen. “Adaptive Difference Beam With Low Sidelobes at Subarray Level Based on Semidefinite Programming”. Applied Computational Electromagnetics Society Journal (ACES), vol. 28, no. 09, Sept. 2021, pp. 795-01, https://journals.riverpublishers.com/index.php/ACES/article/view/11431.