@article{zhao_frey_2006, title={Uncertainty for data with non-detects: Air toxic emissions from combustion}, volume={12}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33750414559&partnerID=MN8TOARS}, DOI={10.1080/10807030600977178}, number={6}, journal={Human and Ecological Risk Assessment}, author={Zhao, Y. and Frey, H. Christopher}, year={2006}, pages={1171–1191} }
 @article{zhao_frey_2004, title={Development of probabilistic emission inventories of air toxics for Jacksonville, Florida}, volume={54}, DOI={10.1080/10473289.2004.10471002}, number={11}, journal={Journal of the Air and Waste Management Association}, author={Zhao, Y. C. and Frey, H. Christopher}, year={2004}, pages={1405–1421} }
 @article{frey_zhao_2004, title={Quantification of variability and uncertainty for air toxic emission inventories with censored emission factor data}, volume={38}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-8544262958&partnerID=MN8TOARS}, DOI={10.1021/es035096m}, number={22}, journal={Environmental Science and Technology}, author={Frey, H. Christopher and Zhao, Y.}, year={2004}, pages={6094–6100} }