Tristão, Hélcio Martins, Pedro Carlos Oprime, Daniel Jugend, and Sérgio Luis da Silva. “Innovation in Industrial Clusters: A Survey of Footwear Companies in Brazil”. Journal of Technology Management & Innovation 8, no. 3 (September 24, 2013): 45–56. Accessed June 27, 2022. https://www.jotmi.org/index.php/GT/article/view/art395.