N. T. Ngoc Tram and T. C. Khanh, “Crinum latifolium L. var. crilae Tram & Khanh, var. n. - A new variety of the species Crinum latifolium L. (Amaryllidaceae) in Vietnam”, AJB, vol. 34, no. 2, pp. 190–193, Jun. 2012.