J. Almeida, L. Barbosa, F. Neves, und J. Oliveira. 6th International Conference on Algebraic Methods and Software Technology (AMAST'97), Seite 554--559. Sydney, Australia, Springer Lect. Notes Comp. Sci. (1349), (Dezember 1997)
J. Almeida, L. Barbosa, F. Neves, und J. Oliveira. Proc. II Conf. Latino Americana de Programación Funcional (CLaPF97), Seite 1343--1358. La Plata, Argentina, (Oktober 1997)
J. Ramalho, J. Almeida, und P. Henriques. TWLT10 - Algebraic Methods in Language Processing, Seite 55--64. Twente University, Netherlands, (6--8 Dec. 1995)AMiLP'95.