1. OVANDO, S. E.; TAMEZ, E.; SANTOYO, E. Geotechnical Aspects for Underexcavating Mexico City’s Metropolitan Cathedral. Main Achievements After Three Years. Symp. on Geotechnical Engineering for Preservation of Monuments and Historic Sites. Int. Soc. for Soil Mech. and Found. Engr., Naples, Italy, Oct., 1996.
2. MELI, R.; SANCHEZ-RAMIREZ, R. Considerations on the Seismic Safety of Historical Monuments. Proc. 11th World Conference on Earthquake Engineering. Pergamon Press (Elsevier), Oxford, 1996.
3. ROSSI, P. P. Nondestructive Evaluation of the Mechanical Characteristics of Masonry Structures. I Quaderni ISMES. No. 278. Bergamo, Italy, 1990.
4. MELI, R.; ROSSI, P. P.; SANCHEZ-RAMIREZ, R.; ZALDIVAR, S. Structural Monitoring of the Mexico City Cathedral. Int. Colloq. on Inspection and Monitoring of the Architectural Heritage. Seriate, Italy, May, 1997.