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Journal of the Air & Waste Management Association (1995)|June 30, 2006
Road grade estimation for on-road vehicle emissions modeling using light detection and ranging dataKaishan Zhang, H Christopher FreyEnvironmental Science & Technology|April 10, 2010
Vehicle-specific emissions modeling based upon on-road measurementsH Christopher Frey, Kaishan Zhang, Nagui M RouphailEnvironmental Science & Technology|May 29, 2008
Fuel use and emissions comparisons for alternative routes, time of day, road grade, and vehicles based on in-use measurementsH Christopher Frey, Kaishan Zhang, Nagui M RouphailRisk Analysis : an Official Publication of the Society for Risk Analysis|June 29, 2002
Introduction to special section on sensitivity analysis and summary of NCSU/USDA workshop on sensitivity analysisH Christopher FreyJournal of the Air & Waste Management Association (1995)|March 29, 2018
Trends in onroad transportation energy and emissionsH Christopher FreyEnvironmental Science & Technology|March 21, 2008
Evaluation of response time of a portable system for in-use vehicle tailpipe emissions measurementKaishan Zhang, Christopher FreyJournal of the Air & Waste Management Association (1995)|September 25, 2002
Quantification of variability and uncertainty in air pollutant emission inventories: method and case study for utility NOx emissionsH Christopher Frey, Junyu ZhengEnvironmental Science & Technology|December 3, 2004
Quantification of variability and uncertainty for air toxic emission inventories with censored emission factor dataH Christopher Frey, Yuchao ZhaoJournal of the Air & Waste Management Association (1995)|December 8, 2017
Real-world fuel use and gaseous emission rates for flex fuel vehicles operated on E85 versus gasolineMaryam Delavarrafiee, H Christopher FreyPageof 9