Freitas, R.R. de et al. 2005. Genetic variation of the hair coat properties and the milk yield of Holstein cows managed under shade in a tropical environment. Brazilian Journal of Veterinary Research and Animal Science. 42, 3 (Jun. 2005), 193–195. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.2005.26431.