1. Bar-Nun, A., Bar-Nun, N., Bauer, S. H., and Sagan, C.: 1970,Science 168, 470.
2. Bell, A.: 1967, in R. F. Baddour and R. S. Timmins (eds.),The Application of Plasmas to Chemical Processing, M.I.T. Press, Cambridge, MA, p. 1.
3. Berger, K.: 1977, in R. H. Golde (ed.),Lightning, Academic, New York, p. 119.
4. Bhetanabhotla, M. N., Crowell, B. A., Coucouvinos, A., Hill, R. D., and Rinker, R. G.: 1985,Atmospheric Environment 19, 1391.
5. Borucki, W. J. and Chameides, W. L.: 1984,Rev. Geophys. Space Phys. 22, 363.