1. Initial stages in the morphological evolution of vapour-grown ice crystals: A laboratory investigation;Bacon;Q. J. R. Meteorol. Soc.,2003
2. A study of snow crystals;Bentley;Appleton’s Popular Sci. Monthly,1898
3. The Bentley Collection, The Schwerdtfeger Library. http://library.ssec.wisc.edu/bentley/index.html
4. Snow Crystals;Bentley,1931
5. R. Descartes, Les Météores, 1637; éd. Adam et Tannery, Paris, Vrin, t. IV, 1965