Brach, Jarosław. „Using Compressed and Liquefied Natural Gas As a Fuel in Long-Distance Road Freight Transport – Opportunities, Challenges, and Threats from the Polish Perspective”. International Business and Global Economy, t. 40, czerwiec 2021, s. 39-50, https://czasopisma.bg.ug.edu.pl/index.php/IBage/article/view/7508.