Uppsala University - Department of Mathematics. Royal Institute of Technology and Stockholm University - Department of Numerical Analysis and Computer Science Lund University - Centre for Mathematical Sciences Linköping University - Department of Mathematics Chalmers University of Technology and Göteborg University - Department of Mathematics Institut Mittag-Leffler - The Royal Swedish Academy of Sciences. Royal Institute of Technology - Institute of Mathematics. (Stockholm, Sweden) Stockholm University - Division of Mathematics. Luleå University of Technology - Department of Mathematics