Examination of Some More Powerful Modifications of the Dickey–Fuller Test

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The long-run and causal analysis of energy, growth, openness and financial development on carbon emissions in Turkey (2013, result): “Leybourne et al. (2005) have recently noted that ADF-WS has good size and power properties compared to other tests.”
UNIT ROOT AND COINTEGRATING LIMIT THEORY WHEN INITIALIZATION IS IN THE INFINITE PAST (2008, unknown): “1682 c© 2009 Cambridge University Press 0266-4666/09 $15.00 correct limit theory in testing (see, for instance, Kim, Leybourne, and Newbold, 2004) and suggesting modifications where these might be useful in practical work (e.g., Leybourne, Kim, and Newbold, 2005).”
Unit Root Testing in Heteroscedastic Panels Using the Cauchy Estimator (2012, background): “1 Using recursive adjustment is an advantage rather than a drawback: recursive removal of deterministic components has been proven to be power-effective when testing for unit roots (Leybourne et al., 2005).”
Electricity consumption and real GDP causality nexus: Evidence from ARDL bounds testing approach for 11 MENA countries (2011, result): “[13] have also recently noted that weighted symmetric Augmented Dickey-Fuller test (ADF-WS) has good size and power properties when it is compared with the other tests.”