Barreto, O.A.C., Silva, J.M. dos S., Gori, R.S.L. and Sellitto, M.A. 2015. Reversal Logistics as a tool for sustainability: a study regarding waste collectors cooperatives in Tocantins. Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental. 19, 2 (Mar. 2015), 332–343. DOI:https://doi.org/10.5902/2236117016094.