Document Type : Review Article
Authors
1 Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, MALAYSIA
2 Department of Civil Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, MALAYSIA
3 Department of Mechanical Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, MALAYSIA
4 School of Electrical and Informations Engineering, University of the Witwatersrand, Johannesburg, SOUTH AFRICA
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