著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Drinka, Bridget",The sigmatic aorist in Indo-European : evidence for the space-time hypothesis,,Institute for the Study of Man,1995,Journal of Indo-European studies,,0941694461,,https://cir.nii.ac.jp/crid/1130282273321266432