Tokarz, Barbara, Eloiza Kohlbeck, Fernanda Hänsch Beuren, Alexandre Borges Fagundes, and Delcio Pereira. 2021. “Methods and Tools for the Development of a Product-Service System: Proposal of a Conceptual Model”. Brazilian Journal of Operations & Production Management 19 (3):1-19. https://doi.org/10.14488/BJOPM.2021.046.