Vu Minh, T., N. Tran Minh, T. Luong Van, and V. Nguyen Van. “An Approach to Design and Manufacture a Limiter, Capable of Adjusting Output Signal Level for X-Band Radars”. Journal of Military Science and Technology, no. RD, Aug. 2021, pp. 117-21, https://jmst.mod.gov.vn/index.php/jmst/article/view/2359.