J. D.  Katz, Frissell, N. A., Vega, J. S., Gerrard, A. J., Gerzoff, R. B., Erickson, P. J., Miller, E. S., Moses, M. L., Ceglia, F., Pascoe, D., Sinanis, N., Smith, P., Williams, R., and Shovkoplyas, A., ?Fitting Ionospheric Models Using Real-Time HF Amateur Radio Observations?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Keystone, CO, 2017.