Palamuleni, Mercy Laita. “The Unemployment Invariant Hypothesis: Heterogeneous Panel Cointegration Evidence from U.S. State Level Data”. International Journal of Economics and Financial Issues 7, no. 1 (January 13, 2017): 414–419. Accessed December 22, 2024. https://mail.econjournals.com/index.php/ijefi/article/view/3239.