Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WARHEIT DB,Pulmonary toxicity study in rats with three forms of ultrafine-TiO2 particles : differential responses related to surface properties,Toxicology,,,2007,230,,90-104,https://cir.nii.ac.jp/crid/1570572700731478656,