@article{article96975228,
title   = {An integrated approach for production lot sizing and raw material purchasing},
author = {Cunha, Artur Lovato da and Santos, Maristela Oliveira dos and Morabito, Reinaldo and Póvoa, Ana Paula Ferreira Dias Barbosa},
year = {2018},
doi = {10.1016/j.ejor.2018.02.042},
journal   = {European Journal of Operational Research}
}