Astuti, Giovanni, Giovanni Cristofolini, Lorenzo Peruzzi, and Paolo Pupillo. “A New Subspecies of Pulmonaria officinalis (Boraginaceae) from the Southern Alps”. Phytotaxa 186, no. 3 (November 27, 2014): 148–157. Accessed September 1, 2025. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.186.3.3.