1. Stanford Mass Shootings in America, Courtesy of the Stanford Geospatial Center and Stanford Libraries;Stanford University,2016
2. Gun Violence Archive,2021
3. A Study of Active Shooter Incidents in the United States between 2000 and 2013;Blair,2014
4. A model of the decision-making process during pre-evacuation;Lovreglio;Fire Saf. J.,2015
5. SDS - Shooter Detection Systems,2018