BibTeX for "ltm: An R Package for Latent Variable Modeling and Item Response Analysis"
@article{Rizopoulos:2006:JSSOBK:v17i05,
author = "Dimitris Rizopoulos",
title = "ltm: An R Package for Latent Variable Modeling and Item Response Analysis",
journal = "Journal of Statistical Software",
volume = "17",
number = "5",
pages = "1--25",
day = "20",
month = "11",
year = "2006",
CODEN = "JSSOBK",
ISSN = "1548-7660",
bibdate = "2006-11-20",
URL = "http://www.jstatsoft.org/v17/i05",
accepted = "2006-11-20",
acknowledgement = "",
keywords = "",
submitted = "2006-05-08",
}