1. Contextualizing Firearms in Mass Shooting Incidents: A Study of Guns, Regulations, and Outcomes;E A Greene-Colozzi;Justice Quarterly
2. Langmann C. Canadian Firearms Legislation and Effects on Homicide 1974 to;Journal of Interpersonal Violence,2008
3. Langmann C. Effect of firearms legislation on suicide and homicide in Canada from;PLoS One,1981