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Seemingly unrelated regressions under additive heteroscedasticity: Theory and share equation applications
Mandy, David M., (1993)
A Unified Approach to Asymptotic Equivalence of Aitken and Feasible Aitken Instrumental Variables Estimators
Mandy, David M., (1994)
Seemingly unrelated regressions under additive heteroscedasticity : Theory and share equation applications