id	domain	url
esrj-65577	dx.doi.org	http://dx.doi.org/10.15446/esrj.v22n2.65577
esrj-65577	dx.doi.org	http://dx.doi.org/10.15446/esrj.v22n2.65577
esrj-65577	cran.r-project.org	http://cran.r-project.org/web/packages
esrj-65577	www.docentes.unal	http://www.docentes.unal