“…First, a keyword search was performed on an array of online abstract databases (see lists of keywords and databases below). Second, the bibliographies of past narrative and empirical reviews of literature that examined the effectiveness of police crime control programs were reviewed (Braga, 2008 , 2016 ; Higginson & Mazerolle, 2014 ; Johnson, Guerette, & Bowers, 2014 ; Lum, Koper, & Telep, 2011 ; Telep & Weisburd, 2012 ; Telep, Weisburd, Gill, Vitter, & Teichman, 2014 ; Weisburd & Telep, 2014 ; Weisburd, Farrington, & Gill, 2017 ; Weisburd, Telep, & Braga, 2015 ;). Third, forward searches for works that cited seminal hot spots policing studies were performed (Braga & Bond, 2008 ; Braga et al, 1999 , 2014 ; Sherman & Rogan, 1995a ; Sherman & Weisburd, 1995 ; Sherman, Buerger, & Gartin, 1989 ; Weisburd & Green, 1995a ; Weisburd et al, 2006 ).…”