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Hari Maghfiroh and  Fadhila Tresna Nugraha and  Harry Prabowo,  Harmonic Comparison between Fluorescent and WOLED (White Organic LED) Lamps.   journal   = {International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. December 2012, vol. 72(12). 1413 - 1417[viewed 18 August 2018]. Available from: http://waset.org/publications/3502.