Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) BARTON K,MuMIn : multi-model inference. R package version 1. 0. 0.,http://r-forge.r-project.org/projects/mumin/,,,2009,,,,https://cir.nii.ac.jp/crid/1573387450573265536,