VLBI observations of VIK J2318−3113, a quasar at z = 6.44 Y. Zhang, T. An, A. Wang, S. Frey, L. I. Gurvits, K. É. Gabányi, K. Perger and Z. Paragi A&A, 662 (2022) L2 Published online: 03 June 2022 DOI: 10.1051/0004-6361/202243785