1. Society, politics and economic development: A quantitative approach;Adelman,1971
2. Soft modelling: Latent variables in higher dimensions— Cross-validation by Stone-Geisser's test;Apel,1982
3. Estimation of a model containing unobservable variables using grouped observations;Attfield;Journal of Econometrics,1977
4. Modeling monetary policy as an unobserved variable;Avery;Journal of Econometrics,1979
5. Linear systems with multiple levels and types of latent variables;Bentler,1982