Jorge Britto, Knowledge bases and regional development: an exploratory application of the "SAS Model" to the Brazilian economy, Blucher Engineering Proceedings, Volume 5, 2018, Pages 926-948, ISSN 23577592, http://dx.doi.org/10.5151/enei2018-52 (www.proceedings.blucher.com.br/article-details/knowledge-bases-and-regional-development-an-exploratory-application-of-the-sas-model-to-the-brazilian-economy-28360) Palavras-chave:: ;