Komatsu, W., de Oliveira Júnior, C. J., & Carvalho, P. S. V. (2006). Direct Water Heater Power Control For Reduced Harmonics And Flicker Content With Optimized Half-cycle Power Control. Eletrônica De Potência, 11(3), 175–180. https://doi.org/10.18618/REP.2006.3.175180