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IRT Test Equating in Complex Linkage Plans
Battauz, Michela, (2013)
Some standard errors in item response theory
Thissen, David, (1982)
Simultaneous multifactor DIF analysis and detection in Item Response Theory
Gonçalves, F.B., (2013)
A note on the asymptotic variance-covariance matrix of item parameter estimates in the rasch model
Gruijter, Dato, (1985)