J. Garcia-Talegon, A. C. Iñigo, S. Vicente-Tavera, and E. Molina-Ballesteros, “Heritage Stone 5. Silicified Granites (Bleeding Stone and Ochre Granite) as Global Heritage Stone Resources from Ávila, Central Spain”, GS, vol. 43, no. 1, pp. 53–62, Mar. 2016.