Institution: | (1) Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, Bonn, 53121, Germany;(2) Joint European Institute for Radio Astronomy, Holland;(3) Jodrell Bank, Nuffield Radio Astronomy Laboratories, UK;(4) Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 84/32, Moscow, 117810, Russia |