The demand for international telephone calls in Australia is comprised of three s ervices with three distinct prices. In order to estimate elasticities for both tariffs and surcharges, an econometric model is developed t hat has two submodels, each of which consists of an aggregate equatio n and...

System tests for cointegration proposed by Stock and Watson (1988), Johansen (1988), and Bewley and Yang (1995) are compared using Monte Carlo experiments that include overspecification of the lag length and data-generating processes with moving average disturbances. Both AIC and SIC are used to...