Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
PINHEIRO J,nlme : linear and nonlinear mixed effects models. R package version 3.1-98,http://cran.r-project.org/package=nlme,,,2011,,,,https://cir.nii.ac.jp/crid/1570572701411464960,