@article{article1d8249ed,
title   = {Parametric correlation functions to model the structure of permanent environmental (co)variances in milk yield random regression models},
author = {Bignardi, A. B and El Faro, L and Cardoso, V. L and Machado, Paulo Fernando and Albuquerque, L. G. de},
year = {2009},
doi = {10.3168/jds.2009-2128},
journal   = {Journal Dairy Science}
}