Vázquez, F.M. and Devesa, J.A. 1996. A revision of Stipa L. and Nassella Desv. (Poaceae) genera in Iberian Peninsula and Balearic Islands. Acta Botanica Malacitana. 21, (Dec. 1996), 125–189. DOI:https://doi.org/10.24310/abm.v21i0.8674.