1Zhang Y.M., Huang G. H., He L.. An inexact reverse logistics model for municipal solid waste management systems [J], Journal of Environmental Management, 2011(92): 522-530.
2Zhang H.M., WangQ.W., Mortimer S.P,..Waste cooking oil as an energy resource: Review of Chinese policies[J]. P, enewable and SustainabJe Energy Reviews, 2012,16(7); 5225-5231.