by A. V. Plavin (Astro Space Centre of Lebedev Physical Institute, Russia), Z. Paragi (Joint Institute for VLBI ERIC), B. Marcote (Joint Institute for VLBI ERIC, the Netherlands), A. Keimpema (Joint Institute for VLBI ERIC, the Netherlands), J. W. T. Hessels (ASTRON, The Netherlands Institute for Radio Astronomy, Anton Pannekoek Institute for Astronomy, University of Amsterdam, the Netherlands), K. Nimmo (ASTRON, The Netherlands Institute for Radio Astronomy, Anton Pannekoek Institute for Astronomy, University of Amsterdam, the Netherlands), H. K.

by Prashanth Mohan (SHAO, China), Tao An (SHAO, China), Yinkang Zhang (SHAO, China), Jun Yang (Chalmers, OSO, Sweden), Xiaolong Yang (SHAO, China) and Ailing Wang (SHAO, China)

by Cristina García Miró (Yebes Observatory - Observatorio Astronómico Nacional, Spain)

by Denise Gabuzda (University College Cork, Ireland)

by Olga Bayandina (INAF, Italy; JIVE, the Netherlands), George Heald (CSIRO, Australia), Tiziana Venturi (INAF, Italy), Tao An (SHAO, China), and SKA-VLBI SOC