Institution: | 1 Laboratoire de Modelisation et Calcul, Université Joseph Fourier, Tour IRMA, B.P.53, 38041 Grenoble CEDEX 9, France. anestis.antoniadis{at}imag.fr, 2 Department of Mathematics, University of Bristol, University Walk, Bristol BS8 1TW, U.K. p.z.fryzlewicz{at}bristol.ac.uk |