@article{Zigman:6403, author = "Zigman, Vida and Dominique, Marie and Grubor, Davorka and Rodger, Craig J. and Clilverd, Mark A.", title = "{Lower-ionosphere Electron Density and Effective Recombination Coefficients from Multi-instrument Observation and Ground VLF Measurements during Solar Flares}", month = "Nov", year = "2022", }