TY  - JOUR
A1  - Frey, H C
A1  - Zheng, J 
T1  - Probabilistic analysis of driving cycle-based highway vehicle emission factors.
Y1  - 2002/12/1
N1  - R826766
JF  - ENVIRONMENTAL SCIENCE & TECHNOLOGY
J1  - ENVIRON SCI TECHNOL
J2  - ENVIRONMENTAL SCIENCE & TECHNOLOGY
J3  - Enviornmenal Research
VL  - 36
IS  - 23
SP  - 5184
EP  - 5191
ER  - 


TY  - JOUR
A1  - Frey, H C
A1  - Bammi, S 
T1  - Quantification of variability and uncertainty in lawn and garden equipment NOx and total hydrocarbon emission factors.
Y1  - 2002//
N1  - R826766
JF  - JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
J1  - J AIR WASTE MANAGE
VL  - 52
IS  - 4
SP  - 435
EP  - 448
ER  - 


TY  - JOUR
A1  - Frey, H C
A1  - Bammi, S 
T1  - Probabilistic nonroad mobile source emission factors.
Y1  - 2003/02/
N1  - R826766
N1  - R826790
JF  - JOURNAL OF ENVIRONMENTAL ENGINEERING
VL  - 129
IS  - 2
SP  - 162
EP  - 168
ER  -