1. Local site effects on weak and strong ground motion
2. K. Atakan, and R. Torres (1993 ) Local site response in San Salvador, El Salvador, based on the October 10, 1986 earthquake.Report No. 1-6 under the project ?Reduction of Natural Disasters in Central America, Earthquake Preparedness and Hazard Mitigation?, Institute of Solid Earth Physics, University of Bergen, Norway, 45 pp.
3. K. Atakan, M. Ciudad Real, R. Torres, J.C. Figueroa, R. Arias, and P. Santos (1993 ) Local site response in San Salvador: Comparison between microtremors, weak-motion and strong motion.Report No. 1-12 under the project ?Reduction of Natural Disasters in Central America, Earthquake Preparedness and Hazard Mitigation?, Institute of Solid Earth Physics, University of Bergen, Norway, 46 p.