Comovements among U.S. State Housing Prices: Evidence from Fractional Cointegration
Carlos Pestana Barros, Luis Gil Alana, James E. Payne
Economic Modelling, vol. 29, 2012, p. 936-942.

Evidence of Long Memory Behavior in U.S. Renewable Energy Consumption
Carlos Pestana Barros, Luis Gil Alana, James E. Payne
Energy Policy, vol. 41, 2012, p. 822-826.