Tran, X. Luong, T. Ha Nguyen, J. Vesely, F. Dvorak, V. Minh Duong, and V. Sang Doan. 2020. “Optimization of Non-Uniform Planar Antenna Array Topology in Two-Dimensional DOA Estimation”. Advances in Military Technology 15 (2): 393-403. https://doi.org/10.3849/aimt.01389.