Masuzawa T et al. (2019), PubMed:
abstractMasuzawa, T., Saito, M., Nakao, R., Nikaido, Y, Matsumoto, M., Ogawa, M., Yokoyama, M., Hidaka, Y., Tomita, J., Sakakibara, K., Suzuki, K., Yasuda, S., Sato, H., Yamaguchi, M., Yoshida, S.I., Koizumi, N., and Kawamura, Y. "Molecular and phenotypic characterization of Leptospira johnsonii sp. nov., Leptospira ellinghausenii sp. nov. and Leptospira ryugenii sp. nov. isolated from soil and water in Japan." Microbiol. Immunol. (2019) 63(3-4):89-99.