1. Validity: an evolving concept;Angoff,1988
2. Generalizability Theory;Brennan,2001
3. Introduction to Classical and Modern Test Theory;Crocker,2006
4. Theory of generalizability: a liberalization of reliability theory;Cronbach;Br. J. Statistical Psychol.,1963
5. Generating random parallel test forms using CTT in a computer-based environment;Gibson;J. Educ. Meas.,1998