Masayuki, Imai; Yoshida, Katsumi; Kitabatake, Masayoshi (1986). "Mortality from Asthma and Chronic Bronchitis Associated with Changes in Sulfur Oxides Air Pollution". Archives of Environmental Health. 41 (1): 29–35. doi:10.1080/00039896.1986.9935762. PMID3963884.
Kikuchi, Ryunosuke (2001). "Environmental Management of Sulfur Trioxide Emission: Impact of SO3 on Human Health". Environmental Management. 27 (6): 837–844. doi:10.1007/s002670010192. PMID11393318. S2CID21009310.
Masayuki, Imai; Yoshida, Katsumi; Kitabatake, Masayoshi (1986). "Mortality from Asthma and Chronic Bronchitis Associated with Changes in Sulfur Oxides Air Pollution". Archives of Environmental Health. 41 (1): 29–35. doi:10.1080/00039896.1986.9935762. PMID3963884.
Kikuchi, Ryunosuke (2001). "Environmental Management of Sulfur Trioxide Emission: Impact of SO3 on Human Health". Environmental Management. 27 (6): 837–844. doi:10.1007/s002670010192. PMID11393318. S2CID21009310.