| Affiliation: | (1) SRON Laboratory for Space Research at Utrecht, Utrecht, The Netherlands;(2) Laboratory for Space Research at Utrecht, Utrecht, The Netherlands;(3) Astronomical Institute, Ond!["rcaron"]("/content/7120162476060130/xlarge345.gif") ejov;(4) Sterrewacht Leiden, Leiden, The Netherlands;(5) The Astronomical Institute at Utrecht, Utrecht, The Netherlands;(6) Harvard Smithsonian Center for Astrophysics at Cambridge, USA;(7) Paris Observatory, Meudon;(8) Geneva Observatory at Sauverny, Sauverny, Switzerland;(9) Kapteyn Astronomical Institute at Groningen, Groningen, The Netherlands;(10) Alfvén Laboratory, Royal Institute of Technology, Stockholm;(11) University of Brussels (VUB), Brussels |
