1. Fast Determination of Sudan I by HPLC/APCI-MS in Hot Chilli, Spices, and Oven-Baked Foods
2. Commission Decision of 20 June 2003 on emergency measures regarding hot chilli and hot chilli products, notified under document number C (2003) 1970, (2003/460/EC), Off. J. Eur. Union L154 (21 June 2003) 114.
3. Implementation of Commission Decision 2003/460/EC, European Union, Brussels, 21 January 2004.
4. National Standard of the People's Republic of China, GB/T 19681-2005, The method for the determination of Sudan dyes in foods—high performance liquid chromatography, 2005.