Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Eelke Jongejans and Edward J. Silverman and Olav Skarpaas,Post-dispersal seed removal of Carduus nutans and C. acanthoides by insects and small mammals,Ecological research,09123814,Tokyo : Springer Japan,2015-01,30,1,173-180,https://cir.nii.ac.jp/crid/1523951030099026944,