@article{RCM_2007_41_Especial_a5,
     author = {M\'onica Hern\'andez Fl\'orez Universidad de los Andes and Bogot\'a},
     title = {Control of inventories under non-convex polynomial cost functions},
     journal = {Revista colombiana de matematicas},
     pages = {221--246},
     publisher = {mathdoc},
     volume = {41},
     number = {Especial},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/RCM_2007_41_Especial_a5/}
}