David R. Jackson, Paolo Burghignoli, Giampiero Lovat, Filippo Capolino, Ji Chen, Donald R. Wilton, Arthur A. Oliner. The Fundamental Physics of Directive Beaming at Microwave and Optical Frequencies and the Role of Leaky Waves. Proceedings of the IEEE, 99(10):1780-1805, 2011. [doi]
Abstract is missing.