M.R. Ramli, Z.Z. Noor, E. Aminudin, M.R. Hainin, R. Zakaria, R. Mohammad Zin, M.Z. Abd Majid, O.S. Yousif, C.M.F.H.C. Wahid, M. Neardey, Carbon Footprint Assessment at Rest and Service Area of Malaysia Highway, Chemical Engineering Transactions. 72 (2019) 73-78. doi:10.3303/CET1972013.