Ros Soler, A., et al. “Cocaine and Other Psychostimulant Consumption: Their Relationship With the Childhood Hyperactivity Syndrome”. Actas Españolas De Psiquiatría, vol. 32, no. 6, Nov. 2004, pp. 346-52, https://actaspsiquiatria.es/index.php/actas/article/view/1402.