Kovalev, Y.Y. Max Planck Institute for Radio Astronomy, Max Planck Society;
Troitsky, S., Sotnikova, Y., Erkenov, A., Kovalev, Y., Kovalev, Y., Plavin, A., et al. (2021). Radio blazar 1801+253 is associated with IceCube-210811A and flares immediately after the neutrino event. The Astronomer's Telegram, 15022, 1.