Sá, S., L. Pinto Ferreira, F. Silva, J. Carlos Sá, M. Teresa, and G. Santos. “The Importance of Subcontracting and Its Relationship With Lean Philosophy in Automotive Industry”. International Journal of Industrial Engineering and Management, vol. 13, no. 3, Sept. 2022, pp. 186-93, doi:10.24867/IJIEM-2022-3-311.