Mathematics
- Word equations with kth powers of variables (2019)
- Word Problem for deterministic and reversible semi-Thue systems (2012)
- Word problem for deterministic and reversible semi-Thue systems (2014)
- Words 2013 (2015)
- Words, Graphs, Automata, and Languages: Special Issue Honoring the 60th Birthday of Professor Tero Harju (2012)





