The Duchenne smile was named after Guillaume-Benjamin-Amand Duchenne DE Boulogne, who, speaking of Darwin, greatly influenced Darwin's book, the Expression of the Emotions in man and Animals.
The research for The Banker's Top 1000 rankings was carried out by Adrian Buchanan, Guillaume Hingel, Charles Piggott, Valeriya Yakutovich, Alberto Berardi and Xavier DE Villepin.