Yu, H. ., Ding, X. ., Zhang, K. ., Wu, Y. ., & Wu, Q. . (2021). Direction Finding System Using Planar Luneburg Lens. Applied Computational Electromagnetics Society Journal (ACES), 31(07), 731–736. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/10003