Ha, D. T., Ve, T. Q., Dung, D. N., Tung, B. S., Hien, N. T., Hanh, V. T. H., Khuyen, B. X. and Lam, V. D. (2021) “Broadband polarization conversion based on small-size metamaterial in the GHz band”, Vietnam Journal of Science and Technology, 59(5), pp. 580–588. doi: 10.15625/2525-2518/59/5/15842.