Christenhusz, M. J. M., and M. W. Chase. “In Memoriam: Eric Alston Christenson (1956-2011)”. Phytotaxa 24, no. 1 (May 26, 2011): 59–60. Accessed March 25, 2025. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.24.1.9.