Pattanapongchai, A. and Laohasongkram, P. (2013) “Case study of power harmonic passive filters design by using 6-pulse phase-controlled converter”, Engineering and Applied Science Research, 30(1), pp. 61–77. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/6552 (accessed: 27 September 2026).