TY  - RPRT
TI  - Modelling non-ignorable missing-data mechanisms with item response theory models.
AU  - Rebecca Holman
AU  - Cees A W Glas
PY  - 2005
DO  - 10.1348/000711005x47168
UR  - https://pubmed.ncbi.nlm.nih.gov/15969835/
ID  - 15969835
ER  -