Rabeau, L., S. R. Gradstein, J.-Y. Dubuisson, M. Nebel, D. Quandt, and C. Reeb. “New Insights into the Phylogeny and Relationships Within the Worldwide Genus Riccardia (Aneuraceae, Marchantiophytina)”. European Journal of Taxonomy, no. 273, Feb. 2017, doi:10.5852/ejt.2017.273.