Reference
Kavouras, I., DuBois, D., Nikolich, G., Avittia, A. C., & Etyemezian, V. (2015). Particulate dust emission factors from unpaved roads in the U.S.-Mexico border semi-arid region. 124, 189-192. https://doi.org/10.1016/J.JARIDENV.2015.07.015