[1]
J. C. Poveda, D. R. Molina, and E. F. Pantoja Agreda, “1H- and 13C-NMR structural characterization of asphaltenes from vacuum residua modified by thermal cracking”, CT&F Cienc. Tecnol. Futuro, vol. 5, no. 4, pp. 49-60, Jun. 2014.