Desiro, A, M Naumann, S Epis, M Novero, C Bandi, A Genre, and P Bonfante, Mollicutes-related endobacteria thrive inside liverwort-associated arbuscular mycorrhizal fungi. Environmental Microbiology 15:822-836. (2012). doi:10.1111/j.1462-2920.2012.02833.x