• Demand equations with some nonstationary variables : the demand for farmed and wild salmon in Japan 

      Asche, Frank; Wessells, Cathy Roheim (Working Paper, Working paper; Working paper, 2002-06)
      There seems to be substantial evidence in favor of treating price series as nonstationary. There are also strong arguments for treating expenditure shares as stationary. With this structure in the data, it is generally not ...
    • Measuring consumer preferences for ecolabeled seafood : an international comparison 

      Johnston, Robert J.; Wessells, Cathy Roheim; Donath, Holger; Asche, Frank (Report, Research report, 2000-08)
      This paper introduces into the food labeling literature an analysis of consumer preferences for products labeled with information about environmental production process attributes. International seafood ecolabeling programs ...
    • Miljømerking av fisk 

      Asche, Frank; Donath, Holger; Johnston, Robert J.; Wessells, Cathy Roheim (Rapport, Research report, 2001-02)
      Miljømerker for fisk ble tatt i bruk for første gang i år 2000. Miljømerking er et markedsbasert forvaltningssystem som flere mener er ønskelig fordi de mener tradisjonelle forvaltningssystemer ikke virker på en tilfredstillende ...