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Ramsay, J.O. & Winsberg, S. (1991). Maximum Marginal Likelihood Estimation for Semiparametric Item Analysis. Psychometrika, 56(3), 365.
You are about to send the following abstract:
Ramsay, J.O. & Winsberg, S. (1991). Maximum Marginal Likelihood Estimation for Semiparametric Item Analysis. Psychometrika, 56(3), 365.