@article{articledac7d563,
title   = {higher-order asymtotic refinements for score tests in proper dispersion models},
author = {Ferrari, Sílvia Lopes de Paula and Cordeiro, Gauss Moutinho and Cribari Neto, Francisco},
year = {2001},
doi = {10.1016/s0378-3758(00)00352-9},
journal   = {Journal of Statistical Planning and Inference}
}