1. Multiple imputation for missing data: A cautionary tale;Allison;Sociological Methods Research,2000
2. Marginal maximum likelihood estimation of item parameters: Application of an EM algorithm;Bock;Psychometrika,1981
3. Out of sight, not out of mind: Strategies for handling missing data;Buhi;American Journal of Health Behavior,2008
4. Maximum likelihood from incomplete data via the EM algorithm;Dempster;Journal of the Royal Statistical Society,1977
5. Causal models for patterns of nonresponse;Fay;Journal of the American Statistical Association,1986