- Arto Salomaa:
Iterated Morphisms with Complementarity on the DNA Alphabet. Words, Semigroups, and Transductions 2001: 405-420 - Ludwig Staiger:
Topologies for the Set of Disjunctive omega-Words. Words, Semigroups, and Transductions 2001: 421-430 - The publications of Gabriel Thierrin. Words, Semigroups, and Transductions 2001: 431-442
- Masami Ito, Gheorghe Paun, Sheng Yu:
Words, Semigroups, and Transductions - Festschrift in Honor of Gabriel Thierrin. World Scientific 2001, ISBN 981-02-4739-7 [contents]