1. Total global gambling market gross win from 2003 to 2015 (in billion euros) [Internet],2011
2. Gambling in Brazil: a call for an open debate;Tavares H;Addiction,2014
3. Loterias da caixa têm arrecadação recorde de mais de 11.3 milhões em 2013,2014
4. World Development Indicators database. Gross domestic product 2010 [Internet],2011
5. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5),2013