Alves, C. & Borges, P.A.V. (2009). A preview of images from Hanno Schaefer (vascular plants). Univ. Azores, Angra do Heroísmo
Alves, C., Schaefer, H., Silva L. & Borges, P.A.V. (2009). A preview of images from the Azorean endemic vascular plants part 1. Univ. Azores, Angra do Heroísmo
Alves, C., Schaefer, H., Silva L. & Borges, P.A.V. (2009). A preview of images from the Azorean endemic vascular plants part 2. Univ. Azores, Angra do Heroísmo.
Angius, R., Bacchetta, G. & Pontecorvo, C. (2011). Floristic and vegetational features of Monte Marganai (SW Sardinia). In: Nardi g., Whitmore D., Bardiani M., Birtele D., Mason F., Spada L. & Cerretti P. (eds), Biodiversity of Marganai and Montimannu (Sardinia), 5: 57-132.
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