AUTHORS
Martin Hahn
Simon Fraser University, Burnaby, V5A 1S6 Canada, mhahn@sfu.ca
Francesco Orilia
University di Cagliari, Loc. Sa Duchessa, 09123 Cagliari, Italy
Adrian Weddell
University of Kent, Canterbury, CT2 7NY GB
Jindra Tichư
University of Otago, Dunedin, New Zealand