1. Alpha MOS. (1998). Odor sensor technical note number 1.
2. Alpha MOS. (2001a). αAstree electronic tongue user manual.
3. Alpha MOS. (2001b). αAstree sensor technical note.
4. Alpha MOS. (1999). Newsletter Alpha MOS. Customer interview of Basell GmBH—routine user of Alpha MOS System (October).
5. Alpha MOS. (2000a). Prometheus, Fox, Kronos, Centauiri, Gemini E-nose and Astree tongue confidential analysis request form.