Loizeau, P.-A.; Barriera G.; Manen J.-F.; Broennimann O. (2005). "Towards an understanding of Ilex L. (Aquifoliaceae) on a World-wide scale". In Friis I.; Balslev H. (eds.). Plant diversity and complexity patterns: local, regional, and global dimensions : proceedings of an international symposium held at the Royal Danish Academy of Sciences and Letters in Copenhagen, Denmark, 25–28 May 2003. Biologiske skrifter. Vol. 55. Kongelige Danske videnskabernes selskab. pp. 507–517. ISBN978-87-7304-304-2. Retrieved 9 April 2012.