Julien Grange, Luc Segoufin. Order-Invariant First-Order Logic over Hollow Trees. In Maribel Fernández, Anca Muscholl, editors, 28th EACSL Annual Conference on Computer Science Logic, CSL 2020, January 13-16, 2020, Barcelona, Spain. Volume 152 of LIPIcs, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020. [doi]
Abstract is missing.