Denoeud F, Carretero-Paulet L, Dereeper A, Droc G, Guyot R, Pietrella M, et al. The coffee genome provides insight into the convergent evolution of caffeine biosynthesis. Science. 2014;345(6201):1181-4. Abstract
Plechakova O, Tranchant-Dubreuil C, Benedet F, Couderc M, Tinaut A, Viader V, et al. MoccaDB - an integrative database for functional, comparative and diversity studies in the Rubiaceae family. BMC plant biology. 2009;9:123.