TY - JOUR TI - An Exogeneity Test for a Simultaneous Equation Tobit Model with an Application to Labor Supply AU - Richard J. Smith AU - Richard W. Blundell JO - Econometrica PY - 1986 VL - 54 IS - 3 DO - 10.2307/1911314 UR - https://doi.org/10.2307/1911314 ER -