@inbook{abadc2d3bf2e4d8f9eace7920129e70b,
title = "Information functions for the general dichotomous unfolding model",
author = "G. Luo and David Andrich",
year = "2005",
language = "English",
isbn = "140203072X",
volume = "4",
series = "Education in the Asia-Pacific Region: Issues, Concerns and Prospects",
publisher = "Springer",
pages = "309--328",
editor = "Sivakumar Alagumalai and Curtis, {David D.} and Njora Hungi",
booktitle = "Applied Rasch Measurement: A Book of Exemplars",
address = "Netherlands",
}