Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
ISHIGA H.,"Oceanic pollution at the Permian-Triassic boundary in pelagic condition from carbon and sulfur stable isotopic excursion, Southwest Japan",Bull. Geol. Surv. Japan,,,1993,44,,721-726,https://cir.nii.ac.jp/crid/1574231875563135616,