B.A.Qayumov, and D.P.Ergashev. “AVTOMOBILGA OLD TOMONDAN TA’SIR QILUVCHI HAVONING QARSHILIK KOEFFISIENTINI NAZARIY HISOBI”. Oriental Journal of Academic and Multidisciplinary Research , vol. 2, no. 3, Mar. 2024, pp. 91-95, https://inno-world.uz/index.php/ojamr/article/view/202.