García-Lobón, J. L., Rubio, F. M., Rey-Moral, C., Sánchez-García, T., Ayala Galán, C., Mediato, J., García-Crespo, J., Bellido Mulas, F., Martín Alfageme, S., Martínez, C. (2013), Characterization of the Santa Olalla de Cala and Cala Mine geological structures (Badajoz and Huelva, Ossa Morena, SW Spain) from gravity and magnetic data. Confidential Report Lundin/IGME agreement. 143 pp., 72 figures, 12 tables.