- June 2022: Åbo Akademi University (Law Faculty) (Finland).
- June 2021: University of Silesia (Law Faculty) (Poland).
- March and April 2021: Barcelona Center for European Studies (BACES)(Spain).
- June to August 2019: Max Planck Institute for the Study of Religious and Ethnic Diversity (Germany).
- January and February 2019: Tarello Institute of the Genoa University (Italy).
Elena Prats 