METHOD FOR THE LEVEL OPTIMIZATION OF VEHICLE PARAMETERS WHEN USING FUELS OF DIFFERENT QUALITY IN COLD CLIMATES Статья Safiullin R., Marusin A., Boryaev A., Safiullin R., Ruchkina I., Pyrkin O., Safiullin R. Transportation Research Procedia. Elsevier B.V.. 2021. С. 581-590