Green Procurement in Construction Industry: A Theoretical Perspective of Enablers and BarriersMuhammad Waris Ali Khan, Ng Hwee Ting, Lee Chia Kuang, Mohd Ridzuan Darun, U. Mehfooz and Mohd Faris KhamidiMATEC Web Conf., 203 (2018) 02012DOI: https://doi.org/10.1051/matecconf/201820302012