著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ,Growth and photosynthesis of ash Fraxinus excelsior and beech Fagus sylvatica seedlings in response to a light gradient following natural gap formation,Ecol Bull,,,2007,52,,147,https://cir.nii.ac.jp/crid/1370848659695943426,