1. E.C. Whipple, Jr., ‘Potential of surfaces in space’, Reports on Progress in Physics 44, 1197–1250 (1981).
2. J.R. Winckler, ‘The application of artificial electron beams to magnetospheric research’, Review of Geophysics 18, 659 (1980).
3. J.G. Laframboise, ‘Is there a good way to model spacecraft charging in the presence of space-charge coupling, flow, and magnetic fields?’, in Proceedings of the Air Force Geophysics Laboratory Workshop on Natural Charging of Large Space Structures in Near Earth Polar Orbit, AFGL-TR-83-0046, 293 (1983).
4. I. Langmuir and K.B. Blodgett, ‘Currents limited by space charge between concentric spheres’, Physics Review 24, 49 (1924).
5. H.M. Mott-Smith, and I. Langmuir, ‘The theory of collectors in gaseous discharges’, Physics Review 28, 727 (1926).