Shu et al, 2006, Comparative Evaluation of the Ground Reflection Algorithm in FHWA Traffic Noise Model (TNM 2.5)
Reference
Shu, N.,
Cohn, L. F.,
Harris, R. A.,
Kim, T. K.,
&
Li, W.
Comparative Evaluation of the Ground Reflection Algorithm in FHWA Traffic Noise Model (TNM 2.5). Journal of Applied Acoustics, 10(1016): 1-9. (2006).

