“…However, while this network had little "formal organization," it did not lack what might be called "network organization": there were elements of local clustering and stratification of centrality. Similar conclusions are reached by several other recent studies of smuggling and trafficking, such as Kenney's (2007) analysis of the Colombian drug trade, Heber's (2009a) analysis of drug traffickers in Stockholm, Desroches's (2005) study of drug trafficking in Canada, Xia's (2008) review of organizational structures in Chinese organized crime, and several studies of human smuggling and trafficking (Kleemans, 2009;Lehti and Aromaa, 2006;Soudijn and Kleemans, 2009;Surtees, 2008;Zhang, 2008;Zhang and Gaylord, 1996).…”