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Alternative formulations of the Nerlove-Press models
Maddala, G. S., (1981)
Asymptotic covariance matrices of two-stage probit and two-stage tobit methods for simultaneous equations models with selectivity
Lee, Lung-Fei, (1980)
Asymetric covariance matrices of two-stage probit and two-stage tobit methods for simultaneous equations models with selectivity
Lee, Lung-fei, (1980)