Abu-Allaban, M., Coulombe, W., Gertler, A. W., Gillies, J. A., Pierson, W. R., Rogers, C. F., Sagebiel, J. C., Tamay, L. (2002). Exhaust Particle Size Distribution Measurements at the Tuscarora Mountain Tunnel, Aerosol Sci. Technol., 36 , 771-789