@article {WanKinLau07,
	title = {Anchors: Software for Anchoring Vignettes Data},
	journal = {Journal of Statistical Software},
	volume = {42},
	number = {3},
	year = {2011},
	pages = {1--25},
	abstract = {When respondents use the ordinal response categories of standard survey questions in different ways, the validity of analyses based on the resulting data can be biased. Anchoring vignettes is a survey design technique intended to correct for some of these problems. The anchors package in R includes methods for evaluating and choosing anchoring vignettes, and for analyzing the resulting data.},
	url = {http://www.jstatsoft.org/v42/i03/},
	author = {Jonathan Wand and Gary King and Olivia Lau}
}
