RT Article T1 Estimating the causal effect of gun prevalence on homicide rates: a local average treatment effect approach JF Journal of quantitative criminology VO 29 IS 4 SP 477 OP 541 A1 Kovandzic, Tomislav A2 Schaffer, Mark E. 1959- A2 Kleck, Gary 1951- LA English YR 2013 UL https://krimdok.uni-tuebingen.de/Record/1636573916 K1 Schusswaffenbesitz K1 Gewaltkriminalität K1 Methodenfragen