1. Sufficient statistics and latent trait models;Andersen;Psychometri.,1977
2. A rating formulation for ordered response categories;Andrich;Psychometri.,1978
3. A model for contingency tables having an ordered response classification;Andrich;Biometrics,1979
4. Using latent trait measurement models to analyse attitudinal data: A synthesis of viewpoints;Andrich,1982