ZIFFER-BERGER, J., and H. V. LESCHNER. “New Interpretation of the <em>Ranunculus cornutus–R. marginatus</em> Complex (Ranunculaceae)”. Phytotaxa, vol. 151, no. 1, Nov. 2013, pp. 35–43, doi:10.11646/phytotaxa.151.1.3.