@article{articled6b9735e,
title   = {Demand elasticities for food products in Brazil: a two-stage budgeting system},
author = {Menezes, Tatiane Almeida de and Azzoni, Carlos Roberto and Silveira, Fernando G},
year = {2008},
doi = {10.1080/00036840600970187},
journal   = {Applied Economics}
}