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2. Arbetman–Rabinowitz, A., Fisunoglu, A., Kang, K. & Kugler, J. (2011). Relative political capacity dataset (Version 2.4) August 2020. https://doi.org/10.7910/DVN/NRR7MB
3. UNEQUALLY SPACED PANEL DATA REGRESSIONS WITH AR(1) DISTURBANCES