The following article is in German - (Auf Deutch)
1964, Von Horst Hansel, Uber eine neue Deutungsmoglichkeit von Terrella-experimenten
The following aticle - in English - was found on the web (http://electric-cosmos.org/PrimerAboutGD.pdf). This is a great introduction to the physics of plasma discharges with an approach "with the hands" that I always enjoy.
D. E. Scott, Primer on gas discharges
Here is a beautiful experimental approach to the magnetopause, as can also be seen with the Planeterrella.
2012 - Yur et al., Simulation in the Front Region of the Earth’s Magnetosphere
A beautiful study of plasma instabilities in a Terrella:
1967, Quinn et Fiorito, Investigation of Laboratory Plasma Instabilities in a Dipole Magnetic Field
In the following article, the Terrella is reduced to a magnet. But physics is rigorously described.
2001, Sheldon et Spurrier, The spinning terrella plasma experiment: Initial results
The following article may seem far from the Planeterrella. Still, it gives a complete writing mechanisms in a plasma, leading to the emissions (radio in this case).
1985, Dulk G.A., Radio emission from the Sun and the stars
How do energetic electrons generate waves in the plasma of A Terrella?
1996, Warren et al., Observation of wave-induced chaotic radial transport in a laboratory terrella experiment