1. Barth, C. A., A. I. F. Stewart, S. W. Bougher, D. M. Hunten, S. A. Bauer, and A. F. Nagy, Mars, Ch. 5.7: Aeronomy of the Current Martian Atmosphere, pp. 1054–1089, Univ. of Arizona Press, 1992.
2. Bauer, S. J. and R. E. Hartle, On the extent of the Mars ionosphere, J. Geophys. Res., 78, 3169, 1973.
3. Bougher, S. W., Comparative thermospheres: Venus and Mars, Adv. Space Res., 15, 21–45, 1995.
4. Bougher, S. W. and J. L. Fox, The Ancient Mars Thermosphere, Workshop on Evolution of Mars Volatiles, LPI Technical Report #96-01, Part 1, pp. 5–6, 1996.
5. Bougher, S. W., R. E. Dickinson, R. G. Roble, and E. C. Ridley, Mars thermospheric general circulation model: Calculations for the arrival of Phobos at Mars, Geophys. Res. Lett., 15, 1511–1514, 1988.