Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) CARMICHAEL GR,"Measurements of sulfur dioxide, ozone and ammonia concentrations in Asia, Africa, and South America using passive samplers",Atmos. Environ.,,,2003,37,,1293-1308,https://cir.nii.ac.jp/crid/1570572701778652416,