Ortig‘ali Yaxshibek o‘g‘li, U., and M. G'olibjon Zohidjon o'g'li. “NEFTDAN TEXNIK MOYLAR ISHLAB CHIQARISHDA GUDRONNI DEASFALTIZASTIYALASH TEXNOLOGIK TIZIMI”. INNOVATIVE DEVELOPMENTS AND RESEARCH IN EDUCATION, vol. 2, no. 13, Jan. 2023, pp. 238-40, https://interonconf.org/index.php/idre/article/view/1696.