TY - JOUR TI - Root-N-Consistent Semiparametric Regression AU - P. M. Robinson JO - Econometrica PY - 1988 VL - 56 IS - 4 DO - 10.2307/1912705 UR - https://doi.org/10.2307/1912705 ER - TY - JOUR TI - The Asymptotic Variance of Semiparametric Estimators AU - Whitney K. Newey JO - Econometrica PY - 1994 VL - 62 IS - 6 DO - 10.2307/2951752 UR - https://doi.org/10.2307/2951752 ER -