Comments on: Panel data analysis—advantages and challenges

Davidson R, Mackinnon JG (2004) Econometric theory and methods. Oxford University Press, New York de Finetti B (1930) Problemi determinati e indeterminati nel calculo delle probabilità. Rend R Accad Naz Lincei Ser 6 12(9) de Finetti B (1970) Teoria delle Probabilità: sintesi introduttiva con appendice critica. Giulio Einaudi Editorial, Torino. Translated as Theory of Probability, Chichester, 1990 Engle RF, Hendry DF, Richard J-F (1983) Exogeneity. Econometrica 51:277–304 Haavelmo T (1944) The probability approach in econometrics. Econometrica 12 (supplement) Heckman JJ (1991) Identifying the hand of the past: distinguishing state dependence from heterogeneity. Am Econ Rev 81(2):75–79 Lindley DV, Novick MR (1981) The role exchangeability in inference. Ann Stat 9:45–58 Neyman J, Scott EL (1948) Consistent estimates based on partially consistent observations. Econometrica 16:1–32 Wooldridge JM (2002) Econometric analysis of cross section and panel data. MIT Press, Cambridge