Kravchenko, E. V., Gómez, J. L., Kovalev, Y. Y., & Voitsik, P. A. (2020). The jet of S5 0716 + 71 at μ as scales with RadioAstron. Advances in Space Research, 65(2), 720-724. doi:10.1016/j.asr.2019.01.042.