@inproceedings{inproceedingsa0ce7b98, title = {A mixed integer model for the integrated lot-sizing and raw material procurement problem with quantity discounts and age-based holding costs}, author = {Tomazella, Caio Paziani and Santos, Maristela Oliveira dos and Alem Junior, Douglas José}, year = {2020}, publisher = {SOBRAPO}, booktitle = {Simpósio Brasileiro de Pesquisa Operacional - SBPO} }