Affiliation: | 1. School of Mathematics and Statistics, University of Glasgow, Scotland, UK;2. Departamento de Electrónica, Telecomunicações e Informática / IEETA, University of Aveiro, Portugal;3. Computational Algebra Group, School of Mathematics and Statistics, University of Sydney, Australia;4. School of Physical, Environmental and Mathematical Sciences, The University of New South Wales Canberra, Australia |