Romero-Sarmiento, MF, Riboulleau, A, Vecoli, M, Laggoun-Défarge, F and Versteegh, GJM (2011) Aliphatic and aromatic biomarkers from Carboniferous coal deposits at Dunbar (East Lothian, Scotland): Palaeobotanical and palaeoenvironmental significance. Palaeogeography, Palaeoclimatology, Palaeoecology, 309(3-4). 309-326. doi:10.1016/j.palaeo.2011.06.015