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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 11–13, May, 1986.
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Kachmar, O.S., Bodan, A.N., Cherednichenko, G.I. et al. Sulfonation of petroleum fractions by SO3 solution in dichloroethane. Chem Technol Fuels Oils 22, 210–213 (1986). https://doi.org/10.1007/BF00719345
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DOI: https://doi.org/10.1007/BF00719345