Lye (Cherm.) 1983 - Lye KA (1983) Studies in African Cyperaceae 25. New taxa and combinations in Cyperus L. Nordic Journal of Botany 3(2): 213-232. doi: 10.1111/j.1756-1051.1983.tb01069.x.
There is no corrections for Cyperus niveus var. tisserantii yet.