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 "Hillring, Bengt",Forest fuel systems utilising tree sections : system evaluation and development of evaluation methodology,,Swedish University of Agricultural Sciences Faculty of Forestry,1996,Studia forestalia Suecica,,9157651752,,https://cir.nii.ac.jp/crid/1130000794151731840