Notes, Comments and Preliminary results Jul 06 2002 Dimitris Christopoulos and Eftymios Tsionas   Non-Sationarity in the Consumption-Income Ratio: Further Evidence from Panel and Assymetric Unit Root Tests   Abstract  Contact Information  Citation  Full Text  -  Note   Oct 11 2001 Efthymios Tsionas and Dimitris Christopoulos   Efficiency measurement with nonstationary variables: an application of panel cointegration techniques   Abstract  Contact Information  Citation  Full Text  -  Note