1. Earthquake impact scale;Wald;Nat. Hazards Rev.,2011
2. USGS “Did You Feel It?” internet-based macroseismic intensity maps;Wald;Ann. Geophys.,2011
3. Undertaking a literature review: a step-by-step approach;Cronin,2008
4. ShakeMap® Manual, Technical Manual, Users Guide, and Software Guide;Wald,2006