2021
- Miguel Ángel Sebastián (IIF-UNAM) November 2021 – December 2021
- Angelo Briones (IIF-SADAF/CONICET/UBA) September 2021 – December 2021
2019
- Bruno Borge (Universidad de Buenos Aires) November 2019 – December 2019
- José Leonardo González Valderrama (Universidad Nacional de Colombia) September 2019 – November 2019.
- Sol Yuan (CONICET, Universidad Nacional del Litoral) May 2019 – June 2019
2018
- José Leonardo González Valderrama (Universidad Nacional de Colombia) September 2018 – December 2018.