Check out the latest research from PKPers Juan Pablo Alperin, Gustavo Fischman, and John Willinsky. From the description:

Open Access - scholarship that is "digital, online, free of charge, and free of most copyright and licensing restrictions" (Suber, 2011) - has dramatically changed the research landscape in universities worldwide in the twenty-first century. In Latin America, regional Open Access initiatives (if not officially labeled "open access") have permeated most research-intensive universities and national science evaluation systems and have begun to alter the way that local research is perceived. Furthermore, the prominence of Open Access, regionally and globally, has become a significant force in transforming previous traditions and systems used by universities in Latin America in the production and access to scientific knowledge, having a profound influence on its position within what might be thought of as the global knowledge exchange.

The article is available from:
http://openarchive.stanford.edu/content/scholarly-communication-strategies-latin-americas-research-intensive-universities