@article{barreto_martins_2018,  title={Customer Participation in Professional Services Operations And Its Impacts On Flexibility and Costs},  volume={15},  ISSN={1808-2386},  url={https://doi.org/10.15728/bbr.2018.15.1.3},  DOI={10.15728/bbr.2018.15.1.3},  number={1},  journal={BBR. Brazilian Business Review},  publisher={Fucape Business School},  author={Barreto, Juliana and Martins, Ricardo Silveira},  year={2018},  month={Jan},  pages={33–46} }