9Fare, K, Grosskopf, S, &Lovell, C.A.K. Productivity Change in Swedish Pharmacies 1980-1989".A Nonparametric Malmquist Approach. Journal of Productivity Analysis, 1992, (3):pp.85-101.
10Fare, R., Grosskopf, S., Norris, M., &Zhang, Z.Productivity growth, technical progress, and efficiency change in industrialized countries American Economic Review, 1994, 84:pp.66-83.
