Korthonen and Wachtel (2005) started their study with the Commonwealth of
Independent States (CIS), independent from the Soviet Union. Vector Autoregression was
carried out with impulse function and variance decomposition. It was discovered that the degree of pass-through and magnitude of volatility of exchange rate to inflation are related. Kiptui,
Ndolo, and Kaminchia (2005) used Kenya as a case study. They first used the cointegration test
by Johansen and a first stage pass-through was found by the error correction model. Impulse
response was imposed for the second stage.