G. Bangga, T. Lutz, and E. Krämer. 7th Conference on Science of Making Torque from Wind (TORQUE, 1037, page 022025. Bristol, IOP Publishing Ltd, (2018)
T. Balz, U. Sörgel, M. Crespi, and B. Osmanoglu. Advances in SAR : Sensors, Methodologies, and Applications, MDPI, reprinted from: Remote Sens. 2018, 10, 1233.(2018)