Gómez, Juan José, M.J. Comas-Rengifo, and A. Goy. “The hydrocarbon source rocks of the Pliensbachian (Early Jurassic) in the Asturian Basin (Northern Spain): Their relationship with the palaeoclimatic oscillations and gamma-ray response”. Journal of Iberian Geology, vol. 42, vol. 42, no. 3, 2016, pp. 259-73, doi: https://doi.org/10.5209/JIGE.53265.