Ueda T and K Hoshino (2003). “Estimation of Firms Efficiencies Using Kalman Filter and a Stochastic Efficiency Model.” J Faculty of Engineering, Seikei University 40(1): 11-16.

Ueda T and K Hoshino (2003). “Estimation of Firms Efficiencies Using Kalman Filter and a Stochastic Efficiency Model.” J Faculty of Engineering, Seikei University 40(1): 11-16.

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