AZIZOVA DILOROM GAYRATOVNA, and ORIPOVA LOBAR NORBOYEVNA. “INNOVATIVE TECHNOLOGIES IN RESIDUAL OIL EXTRACTION”. International Journal of Innovations in Engineering Research and Technology, vol. 7, no. 10, Jan. 2021, pp. 72-74, https://repo.ijiert.org/index.php/ijiert/article/view/97.