This paper estimates the productivity and consumer and producer changes in the New Zealand telecommunications network market between 1987, when it was deregulated, and 1993 as the major firm, Telecom, evolved from a government department to a public company in an environment of light regulation....

This paper examines the selection of data source and econometric technique for studies of banking efficiency using translog cost functions. We examine the use of Seemingly Unrelated Regression estimation for a cost function, as against estimation using Ordinary Least Squares. Choice of cost data...