Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Torgny Näsholm and Jörgen Persson,Plant acquisition of organic nitrogen in boreal forests,Physiologia Plantarum,0031-9317,Wiley,2001-04,111,4,419-426,https://cir.nii.ac.jp/crid/1360292618926053504,https://doi.org/10.1034/j.1399-3054.2001.1110401.x