- Cédric Grueau, Robert Laurini, Lemonia Ragia, editors, Geographical Information Systems Theory, Applications and Management - 6th International Conference, GISTAM 2020, Prague, Czech Republic, May 7-9, 2020, Revised Selected Papers. Volume 1411 of Communications in Computer and Information Science, Springer, 2021.
- Cédric Grueau, Robert Laurini, Lemonia Ragia, editors, Proceedings of the 7th International Conference on Geographical Information Systems Theory, Applications and Management, GISTAM 2021, Online Streaming, April 23-25, 2021. SCITEPRESS, 2021.