1.) The Good Scents Company
2.) Liberles SD, Buck LB. A second class of chemosensory receptors in the olfactory epithelium. Nature. 2006 Aug 10;442(7103):645-50. doi: 10.1038/nature05066. Epub 2006 Jul 30. PMID: 16878137.
References for aroma perceptual qualities should not be taken to indicate that the authors of outside studies necessarily assigned aroma notes to the neurons that receive input from any given receptor. Rather, the findings of outside studies often constitute the information on which we base our own perceptual quality assignments.