With the advent of the translogarithmic (translog) cost function has come greater interest in estimating systems of input share equations (Christensen and Greene, 1976; Berndt and Wood, 1975). A distinguishing feature of the translog cost function is that optimal input shares are linear in...

Under the provisions of the Natural Gas Policy Act of 1978 (NGPA), about 50 percent of natural gas production will be decontrolled in 1985. Whether natural gas is decontrolled under the provisions of NGPA or new decontrol legislation is enacted, real natural gas prices are likely to increase...