http://www.powells.com/book/sweetness-and-sweeteners-9780841274327
http://science.sciencemag.org/content/205/4409/934
https://academic.oup.com/chemse/article-abstract/7/3-4/265/307141
http://www.sciencedirect.com/science/article/pii/003193849090374D
http://psycnet.apa.org/record/1980-27363-001
http://www.sciencedirect.com/science/article/pii/S0031938497001935
http://www.sciencedirect.com/science/article/pii/S0950329302001106
http://europepmc.org/articles/PMC1642698
https://www.ncbi.nlm.nih.gov/pubmed/7219519
https://link.springer.com/chapter/10.1007/978-3-642-65245-5_5
http://www.acrwebsite.org/search/view-conference-proceedings.aspx?Id=5710
https://www.ncbi.nlm.nih.gov/pubmed/352127
https://deepblue.lib.umich.edu/bitstream/handle/2027.42/25560/0000102.pdf?sequence=1
http://www.nature.com/nature/journal/v548/n7667/full/nature23537.html
http://www.nature.com/nature/journal/v444/n7117/full/nature05401.html
http://www.nature.com/nature/journal/v527/n7579/full/nature15763.html
http://www.nature.com/nature/journal/v183/n4673/abs/1831469a0.html
http://www.nature.com/nature/journal/v468/n7327_supp/full/468S18a.html
http://www.nature.com/nature/journal/v216/n5114/abs/216480a0.html