Barbalho TV, Engler R de C. CONCEPTS AND ANALYSIS OF A RELATIONAL SERVICE FROM THE DESIGN PERSPECTIVE. MIX Sustent [nternet]. 31 de marzo de 2022 [citado 2 de abril de 2025];8(2):31-44. isponible en: https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/5181