Microeconomics of GDP
Macroeconomics nowadays tend to require microfoundations. As a result, general equilibrium are more of a topic for macro than micro analysis. The dynamic stochastic general equilibrium (DSGE) model and its variants underlie much of macroeconomic analysis nowadays.

Standard texts:


Stokey and Lucas (1989) Recursive Methods in Economic Dynamics
Ljungqvist and Sargent (2004) Recursive Macroeconomic Theory