Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Geraldine Mabille and Sebastien Descamps and Dominique Berteaux,Predation as a probable mechanism relating winter weather to population dynamics in a North American porcupine population,Population ecology,14383896,Tokyo : Springer Japan,2010-10,52,4,537-546,https://cir.nii.ac.jp/crid/1522825130485129088,