Shinji Izumiyama; Kenji Yagita; Reiko Furushima-Shimogawara; Tokiko Asakura; Tatsuya Karasudani; Takuro Endō (July 2003). "Occurrence and Distribution of Naegleria Species in Thermal Waters in Japan". The Journal of Eukaryotic Microbiology. 50 (s1): 514–5. doi:10.1111/j.1550-7408.2003.tb00614.x. PMID14736147. S2CID45052636.
Yasuo Sugita; Teruhiko Fujii; Itsurou Hayashi; Takachika Aoki; Toshirō Yokoyama; Minoru Morimatsu; Toshihide Fukuma; Yoshiaki Takamiya (May 1999). "Primary amebic meningoencephalitis due to Naegleria fowleri: An autopsy case in Japan". Pathology International. 49 (5): 468–70. doi:10.1046/j.1440-1827.1999.00893.x. PMID10417693. S2CID21576553.
env.go.jp
"Hot Spring Act"(PDF). Ministry of the Environment Government of Japan. Retrieved 18 October 2020.
Shinji Izumiyama; Kenji Yagita; Reiko Furushima-Shimogawara; Tokiko Asakura; Tatsuya Karasudani; Takuro Endō (July 2003). "Occurrence and Distribution of Naegleria Species in Thermal Waters in Japan". The Journal of Eukaryotic Microbiology. 50 (s1): 514–5. doi:10.1111/j.1550-7408.2003.tb00614.x. PMID14736147. S2CID45052636.
Yasuo Sugita; Teruhiko Fujii; Itsurou Hayashi; Takachika Aoki; Toshirō Yokoyama; Minoru Morimatsu; Toshihide Fukuma; Yoshiaki Takamiya (May 1999). "Primary amebic meningoencephalitis due to Naegleria fowleri: An autopsy case in Japan". Pathology International. 49 (5): 468–70. doi:10.1046/j.1440-1827.1999.00893.x. PMID10417693. S2CID21576553.
Shinji Izumiyama; Kenji Yagita; Reiko Furushima-Shimogawara; Tokiko Asakura; Tatsuya Karasudani; Takuro Endō (July 2003). "Occurrence and Distribution of Naegleria Species in Thermal Waters in Japan". The Journal of Eukaryotic Microbiology. 50 (s1): 514–5. doi:10.1111/j.1550-7408.2003.tb00614.x. PMID14736147. S2CID45052636.
Yasuo Sugita; Teruhiko Fujii; Itsurou Hayashi; Takachika Aoki; Toshirō Yokoyama; Minoru Morimatsu; Toshihide Fukuma; Yoshiaki Takamiya (May 1999). "Primary amebic meningoencephalitis due to Naegleria fowleri: An autopsy case in Japan". Pathology International. 49 (5): 468–70. doi:10.1046/j.1440-1827.1999.00893.x. PMID10417693. S2CID21576553.
due to varying interpretations of terminology and local ordinances, rare instances of mixed bathing still exist at places like Tsurunoyu Onsen where the water is opaque.[15]