TY  - RPRT
TI  - The back-step method--method for obtaining unbiased population parameter estimates for ordered categorical data.
AU  - Maria C Kjellsson
AU  - Siv Jönsson
AU  - Mats O Karlsson
PY  - 2004
DO  - 10.1208/aapsj060319
UR  - https://pubmed.ncbi.nlm.nih.gov/15760104/
ID  - 15760104
ER  -