Andrych-Zalewska, Monika, Zdzisław Chłopek, Jerzy Merkisz, and Jacek Pielecha. 2022. “Analysis of the Operation States of Internal Combustion Engine in the Real Driving Emissions Test”. Archives of Transport 61 (1): 71-88. https://doi.org/10.5604/01.3001.0015.8162.