题目：Nonparametric Regression With Predictors Missing at Random
作者：Sam Efromovich
期刊：Journal of the American Statistical Association Mar 2011, Vol. 106, No. 493: 306–319.

题目：Inverse Regression Estimation for Censored Data
作者：Nivedita V. Nadkarni, Yingqi Zhao, Michael R. Kosorok
期刊：Journal of the American Statistical Association Mar 2011, Vol. 106, No. 493: 178–190.