@article{article1b69dc59,
title   = {A multiple group item response theory model with centered skew-normal latent trait distributions under a Bayesian framework},
author = {Santos, Jose R.S. and Azevedo, Caio Lucidius Naberezny and Bolfarine, Heleno},
year = {2013},
doi = {10.1080/02664763.2013.807331},
journal   = {Journal of Applied Statistics}
}