Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "Tazawa, Jun-ichi","Kochiproductus and Leptodus (Brachiopoda) from the Middle Permian of the Obama area, South Kitakami Belt, northeast Japan",Science reports of Niigata University. (Geology),13491237,新潟大学理学部,2003-03,18,,25-39,https://cir.nii.ac.jp/crid/1050282814205194624,