Anderson, G.E., Miller-Jones, J.C.A., Middleton, M.J., Soria, R., Swartz, D.A., Urquhart, R., Hurley-Walker, N., Hancock, P.J., Fender, R.P., Gandhi, P., Markoff, S., Roberts, T.P., "Discovery of a radio transient in M81", Monthly Notices of the Royal Astronomical Society, 2019