J. L. Gómez-Tornero, D. Cañete-Rebenaque, F. D. Quesada-Pereira, and A. Álvarez-Melcón, “Interactive Lab to Learn Radio Astronomy, Microwave & Antenna Engineering at the Technical University of Cartagena (Spain)”, Int. J. Onl. Eng., vol. 7, no. 1, pp. pp. 10–18, Jan. 2011.