000			00563nam a2200169Ia 4500
008			100324s9999 xx 000 0 und d
020			_a0801-1125
040			_a,
100			_asalvanes, Kjell G; Tjotta, Sigve
245			_aCost differences in electricity distribution: multioutput cost function approach with robustness tests of the results
260			_c1991 _bNorwegian School of Economics & Business Administration
300			_a28
366			_b1991
650			_aProduction Management
942			_cWP _2ddc
999			_c93179 _d93179