Hiraoka H, Shimada Y, Sakata Y, et al. (March 2007). "Detection of Borrelia garinii, Borrelia tanukii and Borrelia sp. closely related to Borrelia valaisiana in Ixodes ticks removed from dogs and cats in Japan". Veterinary Parasitology. 144 (1–2): 188–92. doi:10.1016/j.vetpar.2005.05.073. PMID17049744.