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https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32005D0387&from=en
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2. United Nations Office on Drugs and Crime (UNODC) (2017) Market analysis of synthetic. Amphetamine-type stimulants, new psychoactive substances.
http://www.unodc.org/documents/scientific/Booklet_4_Market_Analysis_of_Synthetic_Drugs_ATS_NPS.pdf
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3. United Nations Office on Drugs and Crime (UNODC) (2018) Understanding the synthetic drug market: the NPS factor.
https://www.unodc.org/documents/scientific/Global_Smart_Update_2018_Vol.19.pdf
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4. Reuter P, Pardo B (2017) New psychoactive substances: are there any good options for regulating new psychoactive substances? Int J Drug Policy 40:117–122.
https://doi.org/10.1016/j.drugpo.2016.10.020
5. Agência Nacional de Vigilância Sanitária (ANVISA) (2017) Relatório de atividades 2015/2016 - grupo de trabalho para classificação de substâncias controladas.
http://portal.anvisa.gov.br/documents/33868/3233591/Relato%C2%B4rio+completo+vfinal.pdf/0651b912-8261-4560-8eff-5ba42c37cbcf
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