Valera, Luca, Alessandro Giuliani, Alessio Gizzi, Francesco Tartaglia, and Vittoradolfo Tambone. 2015. “Gambling, Games of Skill and Human Ecology: A Pilot Study by a Multidimensional Analysis Approach”. Annali dell’Istituto Superiore Di Sanità 51 (4). Rome, IT:358-65. https://annali.iss.it/index.php/anna/article/view/163.