\newcommand{\CGrowTime}{
\Delta \log \mathbf{C} _{t+1} & = & \varsigma + \chi \Delta \log \mathbf{C}_{t}  + \eta \Ex_t [\Delta \log \mathbf{Y} _{t+1}] + {\alpha} {     A }_{t}+\epsilon_{t+1},
}
\newcommand{\CMeasGrowTime}{
\Delta \log {{\mathbf{C}}}^* _{t+1} & = & \varsigma + {\chi } \Delta \log \mathbf{C}_{t}^* + \eta \Ex_t [\Delta \log  {     \mathbf{Y} }_{t+1} ] + {\alpha} {A}_{t}+\epsilon_{t+1}.
}
