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Cebolla, V.L.; Diack, M.; Oberson, M.; Bacaud, R.; Cagniant, D.; Nickel-Pépin-Donat, B., Effect of various catalysts on the chemical structure of oils of asphaltenes obtained from the hydroliquefaction of a highly volatile bituminous coal, Fuel Process. Technol., 1991, 28, 2, 183-201, https://doi.org/10.1016/0378-3820(91)90049-I . [all data]