Caiado R, Nascimento D, Quelhas O, Tortorella G, Rangel L. Towards sustainability through Green, Lean and Six Sigma integration at service industry: review and framework. TEDE [Internet]. 2018Aug.28 [cited 2024Nov.13];24(4):1659-78. Available from: https://gc.vgtu.lt/index.php/TEDE/article/view/3119