As you may already be aware of, Glass South America (GSA) 2020 has been postponed to 05-08 November 2020.
In this respect, the GPD and GSA organizing teams have agreed to postpone GPD South America to 05 & 06 of November, 2020, in the hope hope that the situation will have normalized by then.
More info will be released at a later date, for now, you can view the selected abstracts on the website of GPD via this link below: GPD South America 2020 Abstracts.