Template:Selvi & al., 2006
- Selvi, F., Bigazzi, M., Hilger, H.H. & Papini, A. 2006. Molecular Phylogeny, Morphology and Taxonomic Re-Circumscription of the Generic Complex Nonea/Elizaldia/Pulmonaria/Paraskevia (Boraginaceae-Boragineae). Taxon 55(4): 907-918. DOI: 10.2307/25065685
