Volume & Issue: Volume 9, Issue 2, June 2020, Pages 69-138 (Proceedings of the Ischia Group Theory 2018- Part 2) 
2. Catalan fragile words

Pages 69-80

10.22108/ijgt.2019.113180.1506

Daniele D´Angeli; Alfredo Donno; Emanuele Rodaro


6. Open normal subgroups in normally constrained pro-$p$ groups

Pages 125-132

10.22108/ijgt.2019.115382.1532

Norberto Gavioli; Leire Legarreta; Marco Ruscitti; Carlo Maria Scoppola