1. Banks, P.M., Johnson, H.E., Axford, W.I.: The atmosphere of mercury, comments astrophys. Space Phys. II/6, 214, (1970)
2. Barbato, J.P., Ayer, E.A.: Atmospheres. Pergamon, New York (1981)
3. Bauer, S.J.: Physics of planetary ionospheres. In: Roederer, J.G. (ed.) Physic and Chemistry in Space, vol. 6. Springer, Berlin (1973)
4. Blum, P.W., Harris, I.: J. Atmos. Terr. Phys. 37, 193 (1975)
5. Degaonkar, S.S.: An introductory course on space science and Earth’s environment. Gujarat University, Ahmedabad, India (1975)