[1]

Fair RC. 1977. A note on the computation of the tobit estimator. Econometrica 45(7):1723−27

doi: 10.2307/1913962
[2]

Maddala GS. 1983. Limited-dependent and qualitative variables in econometrics (Econometric Society Monographs). Cambridge, MA: Cambridge University Press

[3]

Green WH. 2017. Econometric Analysis. 8th Edition. New York: Pearson International

[4]

Phillips GDA. 1977. Recursions for the two-stage least-squares estimators. Journal of Econometrics 6:65−77

doi: 10.1016/0304-4076(77)90055-0