@article{Wilson2006,
author = {Wilson, M. and Allen, D.D. and Li, J.C.},
title= {Improving measurement in health education and health behavior research using item response modeling: introducing item response modeling},
year = {2006},
doi = {10.1093/her/cyl108},
journal = {Health Education Research},
volume = {21},
pages = {4--18},
}