Farrell, M. J. (1957). "The Measurement of Productive Efficiency". Journal of the Royal Statistical Society. 120 (3). Journal of the Royal Statistical Society. Series A (General), Vol. 120, No. 3: 253–290. doi:10.2307/2343100. JSTOR2343100.
Stolper, Wolfgang F.; Samuelson, Paul A. (1941). "Protection and Real Wages". Review of Economic Studies. 9 (1). The Review of Economic Studies, Vol. 9, No. 1: 58–74. doi:10.2307/2967638. JSTOR2967638. S2CID153734773.
jstor.org
Farrell, M. J. (1957). "The Measurement of Productive Efficiency". Journal of the Royal Statistical Society. 120 (3). Journal of the Royal Statistical Society. Series A (General), Vol. 120, No. 3: 253–290. doi:10.2307/2343100. JSTOR2343100.
Stolper, Wolfgang F.; Samuelson, Paul A. (1941). "Protection and Real Wages". Review of Economic Studies. 9 (1). The Review of Economic Studies, Vol. 9, No. 1: 58–74. doi:10.2307/2967638. JSTOR2967638. S2CID153734773.
semanticscholar.org
api.semanticscholar.org
Stolper, Wolfgang F.; Samuelson, Paul A. (1941). "Protection and Real Wages". Review of Economic Studies. 9 (1). The Review of Economic Studies, Vol. 9, No. 1: 58–74. doi:10.2307/2967638. JSTOR2967638. S2CID153734773.