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Railway electrification:let us start, at least now

Siyambalapitiya, T. (Sri Lanka Energy Managers Association:Colombo, 2010)
The new electricity pricing policy in Sri Lanka

Siyambalapitiya, T. (Sri Lanka Energy Managers Association:Colombo, 2011)
Efficient application of 3 - phase:induction motors

Siyambalapitiya, T. (Sri Lanka Energy Managers Association:Colombo, 1986)
Energy efficient lighting for household:a survey

Lucas, J. R.; Perera, H.Y.R.; Wijayatunga, P. D. C.; Wijeratna, D. C.; Siyambalapitiya, T.; Jayasekara, T.A.K (Sri Lanka Energy Managers Association:Colombo, 1995)
Assessment of technology-economic potentials of energy efficient options for mitigating green house gases

Fernando, W. J. L. S.; Siyambalapitiya, T.; Ariyadasa, L.; Jayatissa, P. V. I. P.; Wijekoon, V. B.; Kumarihamy, A. (Sri Lanka Energy Managers Association:Colombo, 2000)
Overview of Sri Lanka's energy supply and costs:past, present and future

Siyambalapitiya, T. (Sri Lanka Energy Managers Association:Colombo, 2002)