1. User’s guide to the DELTA system. A general system tor proccessing taxonomic descriptions;Dallwitz,1986
2. The Sedges and Rushes of East Africa;Haines,1983
3. Sedges of the British Isles;Jermy,1982
4. Are the sedges of subgenus Primocarex Kük. primitive?;Kreczetowicz;J Bot. U.S.S.R,1936
5. Fam. 4, 20: Cyperaceae-Caricoideae;Kükenthal,1909