While looking for an old document, I found some GAMS files which I got from Venice Summer School 2013. My passion for modelling recalled. Sadly, I dont have time for it now, just save them here for later look.

GAMS for environmental economic modelling and you can find more here.

Mathematical Programming System for General Equilibrium analysis (MPSGE) in GAMS by Thomas F. Rutherford

Dice manual 2013 by Williams Nordhaus