Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) STRANN KB,Is the heart of Fennoscandian rodent cycle still beating? A 14-year study of small mammals and Tengmalm's owls in northern Norway,Ecography,,,2002,25,,81-87,https://cir.nii.ac.jp/crid/1573950400612103680,