V. Di Cecco, R. Catoni, G. Puglielli, L. Di Martino, A. R. Frattaroli, and L. Gratani, “Ecophysiology of Adonis distorta, a high-mountain species endemic of the Central Apennines”, Lazaroa, vol. 37, pp. 125–134, Oct. 2016, doi: https://doi.org/10.5209/LAZAROA.51795