Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Damiaan Persyn and Joakim Westerlund,Error-Correction–Based Cointegration Tests for Panel Data,The Stata Journal: Promoting communications on statistics and Stata,1536-867X,SAGE Publications,2008-06,8,2,232-241,https://cir.nii.ac.jp/crid/1361137045306997632,https://doi.org/10.1177/1536867x0800800205