The Hosoe, Gawana, and Hashimoto CGE text is available [here](https://ia601904.us.archive.org/13/items/TextbookOfComputableGeneralEquilibriumModellingProgrammingAndSimulations/Textbook%20of%20Computable%20General%20Equilibrium%20Modelling%2C%20Programming%20and%20Simulations.pdf). This is a good reference and their Simple CGE chapter is the basis for our simple model.