transition countries still face heavily distorted price systems. To capture such distortions a stochastic shadow cost frontier …

socioeconomic and institutional constraints. To capture such distortions we formulate a stochastic shadow-cost frontier model to … effect on efficiency with respect to the use of insecticides. The imposition of functional concavity on the shadow cost … frontier leads to relative differences in the efficiency estimates of up to 240%. …

socioeconomic and institutional constraints. To capture such distortions we formulate a stochastic shadow-cost frontier model to … effect on efficiency with respect to the use of insecticides. The imposition of functional concavity on the shadow cost … frontier leads to relative differences in the efficiency estimates of up to 240%. …