1. Birnbaum, A. (1968). Some latent trait models and their use in inferring an examinee’s ability. In F.M. Lord and M.R. Novick, Statistical Theories of Mental Test Scores (pp. 397–479 ). Reading, MA: Addison-Wesley.
2. Debets, P., Sijtsma, K., Brouwer, E., and Molenaar, I.W. (1989). MSP: A computer program for item analysis according to a nonparametric IRT approach. Psychometrika
54, 534–536.
3. Giampaglia, G. (1990). Lo Scaling Unidimensionale Nella Ricerca Sociale. Napoli: Liguori Editore.
4. Gillespie, M., TenVergert, E.M., and Kingma, J. (1988). Secular trends in abortion attitudes: 1975–1980–1985. Journal of Psychology
122, 232–341.
5. Grayson, D.A. (1988). Two-group classification in latent trait theory: Scores with monotone likelihood ratio. Psychometrika
53, 383–392.