Dear friends, I wish all of you a MERRY CHRISTMAS nad that 2003 brings PEACE AND PROSPERITY to our world so needed of both. Best regards Ramon ========================================================================= Ramon Puigjaner Universitat de les Illes Balears Departament de Ciencies Matematiques i Informatica 07071 PALMA (Spain) Phone: +34-971173288 Fax: +34-971173003 e-mail: putxi@uib.es =========================================================================