Chłopek, Zdzisław, Jacek Biedrzycki, Jakub Lasocki, and Piotr Wójcik. 2019. “Correlational Analysis of Pollutant Emission Intensity in Various Conditions of Operation of the Automotive Internal Combustion Engine”. Transport 34 (4):490-98. https://doi.org/10.3846/transport.2019.11294.