Biorn, Erik; Hagen, Terje P.; Iversen, Tor and Magnussen, Jon (2006): Heterogeneity in Hospitals' Responses to a Financial Reform: A Random Coefficient Analysis of The Impact of Activity-Based Financing on Efficiency. Published in: HERO Working Paper No. 2006:9 (2006): pp. 1-34.
Biorn, Erik; Hagen, Terje P.; Iversen, Tor and Magnussen, Jon (2002): The Effect of Activity-Based Financing on Hospital Efficiency: A Panel Data Analysis of DEA Efficiency Scores 1992-2000. Published in: HERO Working Paper No. 2002:6 (2002): pp. 1-35.
