Template:Hilger et al., 2004
- Hilger, H.H., Selvi, F., Papini, A. & Bigazzi, M. 2004. Molecular systematics of Boraginaceae tribe Boragineae based on ITS1 and trnL sequences, with special reference to Anchusa s.l. Annals of Botany 94(2): 201–212. DOI: 10.1093/aob/mch132 PDF