A panel data set covering 145 countries between 1960 and 2010 has been investigated closely by using models of … determinants, dependent on one or both status variables in a local estimation. Afterwards, the well-known Solow (1956) model serves …

When analyzing panel data using regression models, it is often reasonable to allow for time-varying covariate effects …. We propose a novel approach to modelling timevarying coefficients in panel data regressions, which is based on penalized …