ISBN 9789812389176 books & textbook
SEMIGROUPS AND LANGUAGES, PROCEEDINGS OF THE WORKSHOP
Araujo, Isabel M. Branco, Mario J. J. Fernandes, Vitor H. Gomes, Gracinda M. S.
World Scientific Pub Co Inc /2004-07-16 Hardcover / 249 Pages
isbn-10: 9812389172 / isbn-13: 9789812389176