1. University of Chile, Department of Civil Engineering, Blanco Encalada 2002, Santiago, Chile
2. Universidad Federico Santa María, Departamento de Obras Civiles, Av. España 1680, Valparaíso, Chile
3. René Lagos & Asociados, Magdalena 140, Santiago, Chile
4. Catholic University of Chile, Department of Civil & Geotechnical Engineering, Av. Vicuña Mackenna 4860, Santiago, Chile
5. University of California, Berkeley, Department of Civil & Environmental Engineering, 775 Davis Hall, Berkeley, California, 94720-1710
6. University of California, Los Angeles, Department of Civil & Environmental Engineering, 5731 Boelter Hall, Los Angeles, California, 90095-1593