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Allowing for inefficiency in parametric estimation of production functions for urban transit firms

Bibliographic reference Tulkens, Henry ; Thiry, Bernard. Allowing for inefficiency in parametric estimation of production functions for urban transit firms. In: Journal of Productivity Analysis, Vol. 3, no.1-2, p. 45-65 (June 1992)
Permanent URL http://hdl.handle.net/2078.1/133293