TY - JOUR A1 - Aigner, D.J. A1 - Amemiya, T. A1 - Poirier, D.J. T1 - On the estimation of production frontiers: maximum likelihood estimation of the parameters of a discontinuous density function Y1 - 1976 DO - 10.2307/2525708 JF - International Economic Review VL - 17 IS - 2 SP - 377 EP - -396 ER -