VargasD., GalvisB., DuránV., and BernalI. C. “Nanoparticles on Electric, Gas, and Diesel Buses in Mass Transit Buses of Bogotá Colombia”. TeMA - Journal of Land Use, Mobility and Environment, Vol. 16, no. 2, Aug. 2023, pp. 367-81, doi:10.6093/1970-9870/9907.