@article{article644d79f4,
title   = {Estimation and diagnostics for heteroscedastic nonlinear regression models based on scale mixtures of skew-normal distributions},
author = {Labra, Filidor V and Garay, Aldo M and Lachos, Victor H and Ortega, Edwin M. M},
year = {2012},
doi = {10.1016/j.jspi.2012.02.018},
journal   = {Journal of Statistical Planning and Inference}
}