Tristão, H.M., Oprime, P.C., Jugend, D. and Silva, S.L. da 2013. Innovation in Industrial Clusters: a Survey of Footwear Companies in Brazil. Journal of Technology Management & Innovation. 8, 3 (Sep. 2013), 45–56. DOI:https://doi.org/10.4067/S0718-27242013000400005.