edited by Masami Ito (Kyoto Sangyo University, Japan), Gheorghe Paun (Romanian Academy, Bucharest, Romania), & Sheng Yu (University of Western Ontario, Canada)

This is an excellent collection of papers dealing with combinatorics on words, codes, semigroups, automata, languages, molecular computing, transducers, logics, etc., related to the impressive work of Gabriel Thierrin. This volume is in honor of Professor Thierrin on the occasion of his 80th birthday.