Perera, K.K.Y.W.Munindradasa, D.A.I.2015-04-202015-04-20200613th Annual Conference of the IEE, (London) Sri Lanka Branch, 2006https://dl.nsf.gov.lk/handle/1/19272EnergyElectronic controllersLightsEfficient electronic controllers for switching lamps at nightConference PaperRG/2005/E/05FR 1585