The frequency ratio and time delay of fundamental and harmonic components in solar radio bursts from LOFAR
by X. Chen et al
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3493

The Radial Variation of the Solar Wind Turbulence Spectra near the Kinetic Break Scale from Parker Solar Probe Measurements,
by Lotz et al
https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3476