Lo, N., Beninati, T., Sassera, D., Bouman, E.A.P., Santagati, S., Gern, L., Sambri, V., Masuzawa, T., Gray, J.S., Jaenson, T.G.T., Bouattour, A., “Widespread Distribution and High Prevalence of an Alpha Proteobacterial Symbiont in the Tick Ixodes Ricinus”, Environmental Microbiology, 8, 7, 1280-1287, 2006.