Blanco-Dios, J.B. 2007. Morphometric study of a hybrid zone between Armeria beirana and A. pubigera (Plumbaginaceae) in the Northwest of the Iberian Peninsula. Anales del Jardín Botánico de Madrid. 64, 2 (Dec. 2007), 229–235. DOI:https://doi.org/10.3989/ajbm.2007.v64.i2.180.