^Qian Z, Jia W, Li T, Hua Z, Liu C (January 2017). "Identification and analytical characterization of four synthetic cannabinoids ADB-BICA, NNL-1, NNL-2, and PPA(N)-2201". Drug Testing and Analysis. 9 (1): 51–60. doi:10.1002/dta.1990. PMID27239006.
^"CNB NEWS RELEASE". Central Narcotics Bureau (CNB). 30 April 2015. Archived from the original on 15 July 2015. Retrieved 24 July 2015.
^"关于印发《非药用类麻醉药品和精神药品列管办法》的通知" [On the issuance of non-pharmaceutical narcotic drugs and psychotropic substances listed in the notice] (in Chinese). China Food and Drug Administration. 27 September 2015. Archived from the original on 1 October 2015. Retrieved 1 October 2015.