Khiem Nguyen (2019). SAVING MICROWAVE MATERIAL IN THE DEVELOPMENT OF DIRECTIONAL COUPLERS ON COMPACT STRUCTURES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Nano, Bio, Green and Space: Technologies for Sustainable Future, 373-380. https://doi.org/10.5593/sgem2019/6.1/s24.049