@inbook{chertow2011the,
  title = {The Material Consumption of Singapore’s Economy: An Industrial Ecology Approach}
  author = {Chertow, Marian; Choi, Esther S; Lee, Keith},
  url = {https://www.academia.edu/8413479/The_Material_Consumption_of_Singapore_s_Economy_An_Industrial_Ecology_Approach},
  year = {2011}
}