Nonparametric polytomous IRT models for invariant item ordering, with results for parametric models

K. Sijtsma, B.T. Hemker

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@article{b0cbc7a3506746d0ba2f139270353efa,

title = "Nonparametric polytomous IRT models for invariant item ordering, with results for parametric models",

author = "K. Sijtsma and B.T. Hemker",

note = "Pagination: 18",

year = "1998",

language = "English",

volume = "63",

pages = "183--200",

journal = "Psychometrika",

issn = "0033-3123",

publisher = "Cambridge University Press",

number = "2",

}