References

• 1988Testing for a Unit Root in Time Series Regression19,288 cited
• 2003Testing for unit roots in heterogeneous panels15,333 cited
• 2002Unit root tests in panel data: asymptotic and finite-sample properties12,832 cited
• 2007A simple panel unit root test in the presence of cross‐section dependence12,758 cited
• 1992Testing the null hypothesis of stationarity against the alternative of a unit root12,634 cited
• 1989The Great Crash, the Oil Price Shock, and the Unit Root Hypothesis7,685 cited
• 1999A Comparative Study of Unit Root Tests with Panel Data and a New Simple Test7,482 cited
• 1996The Purchasing Power Parity Puzzle2,939 cited
• 2004A PANIC Attack on Unit Roots and Cointegration1,890 cited
• 1991Testing the Null Hypothesis of Stationarity Against the Alternative of a Unit Root: How Sure Are We That Economic Time Series Have a Unit Root?1,589 cited
• 2002Testing for a unit root in the nonlinear STAR framework1,567 cited
• 2003The Economics of Exchange Rates1,327 cited
• 2004The Purchasing Power Parity Debate1,034 cited
• 2001Nonlinear Mean‐Reversion in Real Exchange Rates: Toward a Solution To the Purchasing Power Parity Puzzles1,004 cited
• 1981On the bias in flexible functional forms and an essentially unbiased form