Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Ursin E.,"Geographical variation in Apodemus sylvaticus and A. flavicollis (Rodentia, Muridae) in Europe, with special references to Danish and Latvian populations",Biol. Skr. K. Dan. Vidensk. Selsk.,,,1956,8,,1,https://cir.nii.ac.jp/crid/1370861707125062913,