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Kimpe, K.; Jacobs, P.A.; Waelkens, M., Analysis of oil used in late Roman oil lamps with different mass spectrometric techniques revealed the presence of predominantly olive oil together with traces of animal fat, J. Chromatogr. A, 2001, 937, 1-2, 87-95, https://doi.org/10.1016/S0021-9673(01)01304-8 . [all data]