Bedda, K., Hamada, B., Kuzichkin, N.V. and Semikin, K.V. 2017. Extractive purification of hydro-treated gas oil with N-methylpyrrolidone. Journal of the Serbian Chemical Society. 82, 1 (Feb. 2017), 107–116. DOI:https://doi.org/10.2298/JSC160523004B.