6Kuper P F,Renn E,Sauerwein H.Modal mass exhaust emission measurement during ECE testing[J].Proceedings of International Symposium on Automotive Technology and Automation,1983:707-723.
7Hawley J G,Bannister C D,Brace C J,et al.Vehicle modal emissions measurement Techniques and issues[J].Proceedings of the Institution of Mechanical Engineers,2004,218 (8):859 -873.