Nguyễn Minh Thắng, Phạm Hữu Lập, and Nguyễn Đình Thuận. “Development of Cross-Coupler Filters in Rectangular Waveguide by Using E-Plane Inserts”. Journal of Military Science and Technology, no. FEE (December 30, 2022): 112–120. Accessed April 29, 2024. https://en.jmst.info/index.php/jmst/article/view/745.