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  -